The Book of Fasting
22/17. Chapter:
Mentioning The Differences Reported From Yahya Bin Abi Kathir In The Narration Of Abu Salamah about that
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا مُحَمَّدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ عُقْبَةَ، - يَعْنِي ابْنَ حُرَيْثٍ - قَالَ سَمِعْتُ ابْنَ عُمَرَ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الشَّهْرُ تِسْعٌ وَعِشْرُونَ " .
Ibn 'Umar said: "The Messenger of Allah said: "The month is twenty-nine (days)."
Reference : Sunan an-Nasa'i 2143In-book reference : Book 22, Hadith 54English translation : Vol. 3, Book 22, Hadith 2145