Volume 9, Book 91, Number 356:
Narrated Abu Huraira:
Allah’s Apostle finished his prayer after offerings two Rakat only. Dhul-Yaddain asked him
whether the prayer had been reduced, or you had forgotten?” The Prophet said, “Is Dhul-Yaddain
speaking the truth?” The people said, “Yes.” Then Allah’s Apostle stood up and performed another two
Rakat and then finished prayer with Taslim, and then said the Takbir and performed a prostration
similar to or longer than his ordinary prostrations; then he raised his head, said Takbir and pros –
trated and then raised his head (Sahu prostrations).