Sunan Abi Dawud Book 2, Hadith 444
Al-Hasan (al-Basri) would recite fatihat al-kitab in the noon and afternoon prayers while he led in prayer or he was behind the imam and would glorify Allah, and would repeatedly say: “Allah is most great” and “ There is no god but Allah” (i.e takbir and tahlil) equal to the amount one recites al-Qaf (Surah 50) and al-Dhariyat(surah 51).
we used to offer supererogatory prayers and recite supplications while we were standing, and would glorify Allah while bowing and prostrating.
I and ‘Imran b. Husain offered prayer behind ‘All b. AbI Talib(may Allah be pleased with him). When he prostrated, he uttered the takbir (Allah is most great) and when he bowed, he uttered the takbir and when he stood up at the end of two rak’ahs, he uttered the takbir. When we finished our prayer, ‘Imran caught hold of my hand, and said: He has led us in prayer just now like the prayer offered by Muhammed(may peace by upon him).