Sahih Muslim
The Book of Fasting (Kitab Al-Sawm)
Book Number: 006 / Hadith Number: 2425
This hadith has been narrated on the authority of Ibn Abi Aufa (Allah be pleased with him) through another chain of transmitters (but with a sight alteration of words): In this hadith transmitted by one of the narrators (neither these words are found): During the month of Ramadan." nor his statement:" And the night prevails from that side (the eastern side)." (These words are found in the narration of) Hushaim only.