أَخْبَرَنَا عَمْرُو بْنُ زُرَارَةَ، قَالَ أَنْبَأَنَا إِسْمَاعِيلُ، عَنْ أَيُّوبَ، عَنْ مُحَمَّدٍ، قَالَ قَالَتْ أُمُّ عَطِيَّةَ كُنَّا لاَ نَعُدُّ الصُّفْرَةَ وَالْكُدْرَةَ شَيْئًا ‏.‏

It was narrated that Muhammad said: "Umm 'Atiyah said: 'We used not to regard yellowish and brownish discharge as anything important.'" Translation Not Available

Book Ref: Sunan An Nisai Book 3 Hadith 368
Web Ref:  Sunan An Nisai Vol 1 Book 3 Hadith 368