It is narrated from Sayyiduna Imran bin Husayn (may Allah be pleased with him) that he prayed with Sayyiduna Ali (may Allah be pleased with him) in Basrah. Imran (may Allah be pleased with him) says: He taught us the prayer that the Messenger of Allah (peace and blessings be upon him) used to lead. He related that he would say the takbir every time he rose up and went down.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2496