Musannaf Ibn Abi Shaybah 2645 — A man who enters while the people are

Zayd bin Wahb said: I went with Sayyiduna Abdullah (bin Mas'ud) (may Allah be pleased with him) from his house to the mosque. When we reached the middle of the mosque, the imam bowed. Abdullah said the takbir and went into bowing, and I bowed along with him. Then we walked in the state of bowing until we reached the row, by which time the people had already raised their heads from bowing. Then, when the imam completed the prayer, I stood up, thinking that I had missed that rak'ah. But Abdullah took me by the hand and sat me down, and said: "You did catch that rak'ah."