Narrated Anas: Allah’s Apostle took an oath for abstention from h is wives (for one month), and during those days he had a sprain in his foot. He stayed in a Mashrubah (an upper room) for twenty-nine nights and then came down. Then the people said, “O Allah’s Apostle! You took an oath for abstention (from your wives) for one month.” On that he said, “A month can be of twenty-nine days.”
Hadith In Arabic Text :
حدثنا عبد العزيز بن عبد الله، حدثنا سليمان بن بلال، عن حميد، عن أنس، قال آلى رسول الله صلى الله عليه وسلم من نسائه، وكانت انفكت رجله، فأقام في مشربة تسعا وعشرين ليلة، ثم نزل فقالوا يا رسول الله آليت شهرا. فقال {إن الشهر يكون تسعا وعشرين}
Chapter : Oaths and Vows – كتاب الأيمان والنذور