Sahih al-Bukhari 46:30
Narrated Anas:
Allah's Messenger (ﷺ) took an oath that he would not go to his wives for one month as his foot had been sprained. He stayed in an upper room when `Umar went to him and said, "Have you divorced your wives?" He said, "No, but I have taken an oath that I would not go to them for one month." The Prophet stayed there for twenty-nine days, and then came down and went to his wives.
Reference
Sahih al-Bukhari 46:30
In-book reference
Book 46, Hadith 30
Arabic Text
حَدَّثَنَا ابْنُ سَلاَمٍ، حَدَّثَنَا الْفَزَارِيُّ، عَنْ حُمَيْدٍ الطَّوِيلِ، عَنْ أَنَسٍ ـ رضى الله عنه ـ قَالَ آلَى رَسُولُ اللَّهِ صلى الله عليه وسلم مِنْ نِسَائِهِ شَهْرًا، وَكَانَتِ انْفَكَّتْ قَدَمُهُ فَجَلَسَ فِي عِلِّيَّةٍ لَهُ، فَجَاءَ عُمَرُ، فَقَالَ أَطَلَّقْتَ نِسَاءَكَ قَالَ " لاَ، وَلَكِنِّي آلَيْتُ مِنْهُنَّ شَهْرًا ". فَمَكُثَ تِسْعًا وَعِشْرِينَ، ثُمَّ نَزَلَ، فَدَخَلَ عَلَى نِسَائِهِ.