Narrated Abu Huraira: Allah's Apostle finished his prayer after offerings two rak`at 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 rak`at 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 prostrated and then raised his head (Sahu prostrations).