The narrations related to Imams

Narrating from Abu Al-Vasha , Badr Al-Din Eini has written that one of features of Amir Momenan was that he was the gate of the science of the prophet

ومن خواصه أي: خواص علي، رضي الله تعالى عنه، فيما ذكره أبو الشاء: أنه كان أقضى الصحابة، وأن رسول الله، صلى الله عليه وسلم، تخلف عن أصحابه لأجله، وأنه باب مدينة العلم، وأنه لما أراد كسر الأصنام التي في الكعبة المشرفة أصعده النبي صلى الله عليه وسلم برجليه على منكبيه، وأنه حاز سهم جبريل، عليه الصلاة والسلام، بتبوك.
One of features of Imam Ali (peace be upon him), as Abu Al-Vasha has said, was that he judged better than all among the companions. The messenger of God (peace of Allah be upon him and his descendants) separated from other companions because of him (he walked slowly until Imam Ali arrived him). He was the gate of the science and when he wanted to break the idols up the house of Kabe, the messenger of God (peace of Allah be upon him nad his descendants) had him sit on his shoulders. Gabriel took part at war instead of him and said '' my reward belongs for Ali (peace be upon him)...
Al-Eini Al-Ghitabi Al-Hanafi, Badr Al-Din Abu Muhammad Ibn Ahmad (died in 855 Hegira) Omdat Al-GhariSharhSahih Al-Bokhari; v 16 p 215; published by: Dar EhyaToras Al-Arabi; Beirut
Mola Ali Horavi has written about the mutual understanding between the scientists of the Islamic nation and the companions
أن فهم الصحابي لا سيما مثل علي باب مدينة العلم مقدم على فهم غيره
The understanding of the companions: a personality like Imam Ali (peace be upon him) that is the gate of science is prior to the understanding of others.
Mola Al-Ghari, Nur Al-Din Abu Al-Hassan Ali IbnSoltan Muhammad Al-Heravi (died in 1014 Hegira) Merghat Al-MafatihSharhMeshkat Al-Masabih v 4 p 119; researched by: Jamal Itani; published by: Dar Al-Kotob Al-Elmie; Lebanon; Beirut; First Edition; 1422 Hegira; 2001
Alame Shahab Al-Din Alusi Hanafi has used this title for Amir Momenan (peace be upon him) in several parts of his interpretation which we will refer to two cases

He has written about the distortion of the Quran
وبعد إنتشار هذه المصاحف بين هذه الأمة المحفوظة لا سيما الصدر الأول الذي حوى من الأكابر ما حوى وتصدر فيه للخلافة الراشدة على المرتضى وهو باب مدينة العلم لكل عالم والأسد الأشد الذي لا تأخذه في الله لومة لائم.
After publishing these books among people with resting on God especially in the first era of the Islam that included a lot dignitaries (in that time, Ali Morteza undertook caliphate and the same person that was the gate of science for each scientist), the criticisms of no one did not influence the brave lion of God (Imam Ali).
Al-Alusi Al-Baghdadi Al-Hanafi, AbolfazlShahab Al-Din Al-Sayyed Mahmud Ibn Abdullah (Died in 1270 Hegira) Ruh Al-Maani Fi Tafsir Al-Ghoran Al-Azim and Al-Sab Al-Masani v 1 p 23; published by: Dar EhyaToras Al-Arabi; Beirut
He has written in another book
وأن من وهب سبحانه له من أمته قوة قدسية يهب سبحانه له ما تتحمله قوته منه وقد سمعت ما سمعت في النقباء والنجباء ويمكن أن يكون قد علم عليه الصلاة والسلام ذلك أمثالهم ومن هو أعلى قدرا منهم كالأمير علي كرم الله تعالى وجهه وهو باب مدينة العلم بطريق من طرق التعليم.
If God gives someone from the nation of the messenger of God (peace of Allah be upon him and his descendants) the power of Ghodsi, he gives it as much as he or she can tolerate it. We have heard about and selected people a lot. The messenger of God (peace of Allah be upon him and his descendants) may have learnt for these kinds of people and persons that were better than them such as Amir Momenan (peace be upon him) that was the gate of science with one of ways of learning. (The messenger of God (peace of Allah be upon him and his descendants) had taught them with one of ways).

Ruh Al-Maani v 23 p 120

Sheikh Abd Al-Hay Katani has written about the science of Amir Momenan( peace be upon him)

وقال ابن المسيب ما كان أحد يقول سلوني غير علي وقال ابن عباس أعطي على تسعة اعشار العلم ووالله لقد شاركهم في العشر الباقي قال واذ اثبت الشيء عن علي لم نعدل إلى غيره وسؤال كبار الصحابة له ورجوعهم إلى فتاويه واقواله في المواطن والمعضلات مشهور وناهيك أن انتهاء طرق علوم القوم وسلاسلهم اليه فلست ترى من طريقة في الاسلام الا وانتهاؤها اليه ومنتهى سندها عنه رضي الله عنه تصديقا لكونه باب مدينة العلم.
Saeid Ben Mosib has said no one except Imam Ali (peace be upon him) did not say '' ask me whatever you want''. It has been narrated from Ibn Abbas that nine tenth of all sciences have been given to Imam Ali (peace be upon him). I swear God that he shared one tenth left. He also said ''when something was proved through Imam Ali (peace be upon him), I did not refer to something else.
The question of the dignitaries of companions from him and their referral to the fatwa and the remarks of Imam Ali (peace be upon him) about problems was famous. You should know that all ways of sciences of tribes and their courses come back to him. You can find no way of Islamic ways except its end toward and the end of the document leads to him in order to confirm the remark of the prophet '' he is the gate of science''.
Al-Katani, Abd Al-Hay IbnAbd Al-Kabir (died in 1383 Hegira) Nezam al-Hokumat Al-Nabavie Al-Masmi Al-Taratib Al-Edraya; v 2 p 370; published by: Dar Al- Ketab Al-Arabi; Beirut
Ibn Hamdun narrates the remarks of a woman with the name '' Um Al-Kheir (the daughter of Al-Harish Al-Bareghie) that sermonized in the presence of Moavie. For example, she said
فإلى أين تريدون رحمكم الله عن ابن عم رسول الله صلى الله عليه وسلم وزوج ابنته وأبي ابنيه، خلق من طينته، وتفرع من نبعته، وخصه بسره، وجعله باب مدينة علمه وعلم المسلمين، وأبان ببغضه المنافقين.
Where are you going from the cousin of the messenger of God (peace of Allah be upon him and his descendants)? He was also the husband of his daughter and the father of his two children; the same person that had been born from nature of the messenger of God, had been flown from his spring and he was privacy to his secrets. The same person that the messenger of God (peace of Allah be upon him and his descendants) considered him the gate of his science and the science of all of the Muslims. But the hypocrites expressed their animosity with him clearly.
Ibn Hamdun, Muhammad Ibn Al-Hassan Ibn Muhammad Ibn Ali (Died in 608 Hegira) Al-Tazkarat Al-Hamdunie v 5 p 186-188; researched by: Ehsan Abbas; Bakr Abbas; published by: Dar Sader; Beirut; First Edition; 1996

Selah Al-Din Sefdi has narrated a poem from Safi Al-Din Hali about the messenger of God (peace of Allah be upon him and his descendants) that the gate of science of the prophet has been said. First, he praises the poet in this way

صفي الدين الحلي. عبد العزيز بن سرايا بن علي بن أبي القاسم بن أحمد بن نصر بن أبي العز ابن سرايا بن باقي بن عبد الله بن العريض هو الإمام العلامة البليغ المفوه الناظم الناثر شاعر عصرنا على الإطلاق صفي الدين الطائي السنبسي الحلي...
Sefdi Al-Din Heli was a leader, Alame and said remarks in verse and prose beautifully. He was a poet in our era (when people said the word '' author'' absolutely, their purpose was Sefdin Al-Din Heli).
And then he has said
ونقلت من خطه قصيدة يمدح بها سيدنا رسول الله(ص) الطويل...
I narrate this long poem from his handwriting which he praised the messenger of God (peace of Allah be upon him and his descendants)
لأنك سر الله والآية التي تجلت فجلى ظلمة الشرك نورها
مدينة علم وابن عمك بابها فمن غير ذاك الباب لم يؤت سورها
You were you were the secret of God and a signs appeared and its light eradicated the tyranny of polytheism. You were the scientific city and your cousin was its gate. Hence, no one looks for wall except door.
Al-Safdi, Salah Al-Din Khalil IbnEybak (died in 746 Hegira) Al-VafiBel-Vafiat; v 18 p 299; researched by: Ahmad Al-Arnowt and TurkyMostafa; published by: Dar EhyaToras; Beirut; 1420 Hegira; 2000
It has document, but it is weak
Ibn Juzi Hanbeli is one of persons that tried to weaken the narration ''Ana Median Al-Elm'' possibly and to prove that this narration is faked.
It is interesting that he proves this narration with five ways from Amir Momenin (peace be upon him), ten ways from Ibn Abbas, and two ways from Jaber Ben Abdullah and then he concludes that this narration is faked and weak.

We would like to ask him '' if a narration had been narrated with all of these documents about the virtues of Abubakr and Umar, would have you tried to weaken it? Or you said '' because ways are different; therefore, they improve each other and we assure that this narration has been accepted''.
As Nuhammad Amir Sanaee has written about the narration
«اقتدوا باللذين من بعدى أبى بكر وعمر»

وله طرق فيها مقال إلا أنه يقوي بعضها بعضا.
Al-Amir Al-Sanani, Muhammad IbnEsmaeel (died in 1182 Hegira) Sabal Al-Salam SharhBolugh Al-Maram Min Adale Al-Ahkam; v 2 p 11; researched by: Muhammad Abd Al-Aziz Al-Khuli; published by: Dar EhyaToras Al-Arabi; Beirut; fourth edition; 1379 Hegira

Or Ibn Hajar Asghalani claims that some verses have been descended according to the belief and the remark of Umar
وأورد بن أبي حاتم والطبري أيضا من طريق عبد الرحمن بن أبي ليلى أن يهوديا لقي عمر فقال أن جبريل الذي يذكره صاحبكم عدو لنا فقال عمر من كان عدوا لله وملائكته ورسله وجبريل وميكال فإن الله عدو للكافرين فنزلت على وفق ما قال وهذه طرق يقوي بعضها بعضا
Al-Asghalani Al-Shafei, Ahmad Ibn Ali IbnHajarAbolfazl (died in 852 Hegira) Fath Al-Bari SharhSahih Al-Bokhari; v 8 p 166; researched by: Moheb Al-Khatib; published by: Dar Al-Marefat; Beirut
There are other cases; when there was a narration about the virtues of the caliphs even though all of their ways were weak they improved each other and they were reason for the Sunni scientists.