أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ مِسْعَرٍ، عَنِ الْمِقْدَامِ بْنِ شُرَيْحٍ، عَنْ أَبِيهِ، قَالَ سَمِعْتُ عَائِشَةَ، - رضى الله عنها - تَقُولُ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُنَاوِلُنِي الإِنَاءَ فَأَشْرَبُ مِنْهُ وَأَنَا حَائِضٌ ثُمَّ أُعْطِيهِ فَيَتَحَرَّى مَوْضِعَ فَمِي فَيَضَعُهُ عَلَى فِيهِ ‏.‏

It was narrated from Al-Miqdam bin Shuraih that his father said: "I heard 'Aishah say: 'The Messenger of Allah (PBUH) would hand me the vessel and I would drink from it, while I was menstruating, then I would give it to him and he would look for the place where I had put my mouth and put that to his mouth.'" Translation Not Available

Book Ref: Sunan An Nisai Book 1 Hadith 282
Web Ref:  Sunan An Nisai Not Available