وَعَنْ عَائِشَةَ قَالَتْ: خَرَجْنَا مَعَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَا نَذْكُرُ إِلَّا الْحَجَّ فَلَمَّا كُنَّا بِسَرِفَ طَمِثْتُ فَدَخَلَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَأَنَا أَبْكِي فَقَالَ: «لَعَلَّكِ نَفِسْتِ؟» قُلْتُ: نَعَمْ قَالَ: «فَإِنَّ ذَلِكِ شَيْءٌ كَتَبَهُ اللَّهُ عَلَى بَنَاتِ آدَمَ فَافْعَلِي مَا يَفْعَلُ الْحَاجُّ غَيْرَ أَنْ لَا تَطُوفِي بِالْبَيْتِ حَتَّى تَطْهُرِي»

We went out with the Prophet mentioning nothing but the hajj, and when we were at Sarif (A place near at-Tan'im) I began to menstruate. The Prophet came in and finding me weeping, he said, “Perhaps you are menstruating.” When I replied that I was, he said, “That is something which God has decreed for the daughters of Adam; but do what the pilgrims do, with the exception of going round the House, till you are purified.” Bukhari and Muslim.