CHAPTER. What has been said about (facing) the Qiblah (Kabah at Makkah) and whoever considered that there was no need to repeat the Salat (prayer) if someone offered prayers by mistake facing a direction other than that of the Qiblah.
Narrated `Abdullah: Once the Prophet offered five rak`at in Zuhr prayer. He was asked, Is there an increase in the prayer? The Prophet said, And what is it? They said, You have prayed five rak`at.' So he bent his legs and performed two prostrations (of Sahu).
Authentic
