أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا سُفْيَانُ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ بْنِ مُحَمَّدِ بْنِ أَبِي بَكْرٍ الصِّدِّيقِ، - رضى الله عنه - عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ خَرَجْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم لاَ نُرَى إِلاَّ الْحَجَّ فَلَمَّا كُنَّا بِسَرِفَ حِضْتُ فَدَخَلَ عَلَىَّ رَسُولُ اللَّهِ صلى الله عليه وسلم وَأَنَا أَبْكِي فَقَالَ ‏"‏ مَا لَكِ أَنَفِسْتِ ‏"‏ ‏.‏ قُلْتُ نَعَمْ ‏.‏ قَالَ ‏"‏ هَذَا أَمْرٌ كَتَبَهُ اللَّهُ عَزَّ وَجَلَّ عَلَى بَنَاتِ آدَمَ فَاقْضِي مَا يَقْضِي الْحَاجُّ غَيْرَ أَنْ لاَ تَطُوفِي بِالْبَيْتِ ‏"‏ ‏.‏

It was narrated that 'Aishah said: "We went out with the Messenger of Allah (PBUH) with no intention other than Hajj. When he was in Sarif I began menstruating. The Messenger of Allah (PBUH) entered upon me and I was weeping. He said: 'What is the matter with you? Has you Nifas begun?' I said: 'Yes.' He said: 'This is something that Allah the Mighty and Sublime has decreed for the daughters of Adam. Do what the pilgrims do but do not perform Tawaf around the House.'" Translation Not Available

Book Ref: Sunan An Nisai Book 3 Hadith 348
Web Ref:  Sunan An Nisai Vol 1 Book 3 Hadith 349