Bulugh al-Maram

Bulugh al-Maram 143

Menstruation
Arabic hadith text
وَعَنْ أُمِّ عَطِيَّةَ رَضِيَ اَللَّهُ عَنْهَا قَالَتْ: { كُنَّا لَا نَعُدُّ اَلْكُدْرَةَ وَالصُّفْرَةَ بَعْدَ اَلطُّهْرِ شَيْئًا } رَوَاهُ اَلْبُخَارِيُّ, وَأَبُو دَاوُدَ وَاللَّفْظُ لَه ُ 1‏ .‏‏1 ‏- صحيح.‏ وهو موقوف.‏ رواه البخاري (326)‏، وأبو داود (307)‏.‏
Translation
Narrated Umm `Atiyah (RAA)

After we were pure, we did not consider the yellow or muddy discharge to be anything (i.e. of the menses blood)[Reported by Al-Bukhari and Abu Dawud and the wording is of Abu Dawud].