أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ سُفْيَانَ، قَالَ حَدَّثَنِي أَبُو الْمِقْدَامِ، ثَابِتٌ الْحَدَّادُ عَنْ عَدِيِّ بْنِ دِينَارٍ، قَالَ سَمِعْتُ أُمَّ قَيْسٍ بِنْتَ مِحْصَنٍ، أَنَّهَا سَأَلَتْ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ دَمِ الْحِيضَةِ يُصِيبُ الثَّوْبَ قَالَ " حُكِّيهِ بِضِلَعٍ وَاغْسِلِيهِ بِمَاءٍ وَسِدْرٍ " .
It was narrated that 'Adi bin Dinar said: "I heard Umm Qais bint Mihsan say that she asked the Messenger of Allah (PBUH) about menstrual blood that gets on one's clothes. He said: 'Scratch it with a stick and wash it with water and lotus leaves.'" Translation Not Available
Book Ref: Sunan An Nisai Book 3 Hadith 395
Web Ref: Sunan An Nisai Vol 1 Book 3 Hadith 395