(11) باب ذِكْرِ الاِخْتِلاَفِ عَلَى عُبَيْدِ اللَّهِ بْنِ عُمَرَ فِي هَذَا الْحَدِيثِ
It was narrated that Abu Hurairah said:
"The Messenger of Allah mentioned the crescent and said: 'When you see it, fast and when you see it, stop fasting, and if it is obscured from you (too cloudy), then count thirty days."' (FR)
Reference (FR): Sunan an-Nasa'i 2123 (FR)
In-book reference (FR): Book 22, Hadith 34 (FR)
English translation (FR): Vol. 3, Book 22, Hadith 2125 (FR)