Mutarrif said: Imran bin Husayn (may Allah be pleased with him) and I prayed in Kufah behind Ali bin Abi Talib (may Allah be pleased with him). Whenever he went down and rose up, he said the takbir. When he completed his prayer, Imran (may Allah be pleased with him) said: This is a prayer the like of which I have not prayed since the Messenger of Allah (peace and blessings be upon him).
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15321