She was told that 'Aishah said: "The Messenger of Allah said concerning a woman who sees that which causes her doubt (i.e. some bleeding) after she becomes pure: 'That is a vein or veins.'" (Da'if)"What was meant by 'after becomes pure' is after having a bath (following the end of her period)."  

قَالَ رَسُولُ اللَّهِ ﷺ فِي الْمَرْأَةِ تَرَى مَا يَرِيبُهَا بَعْدَ الطُّهْرِ قَالَ إِنَّمَا هِيَ عِرْقٌ أَوْ عُرُوقٌ قَالَ مُحَمَّدُ بْنُ يَحْيَى يُرِيدُ بَعْدَ الطُّهْرِ بَعْدَ الْغُسْلِ  

"We did not think anything of the yellowish or brownish discharge." (Sahih) (Another chain) It was narrated that Umm 'Atiyyah said: "We did not think that the yellowish or brownish discharge counted for anything." Muhammad bin Yahya said: "Wuhaib (who narrated the second version) is the better of them with this according to us."  

لَمْ نَكُنْ نَرَى الصُّفْرَةَ وَالْكُدْرَةَ شَيْئًا قَالَ مُحَمَّدُ بْنُ يَحْيَى حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ الرَّقَاشِيُّ حَدَّثَنَا وُهَيْبٌ عَنْ أَيُّوبَ عَنْ حَفْصَةَ عَنْ أُمِّ عَطِيَّةَ قَالَتْ كُنَّا لاَ نَعُدُّ الصُّفْرَةَ وَالْكُدْرَةَ شَيْئًا قَالَ مُحَمَّدُ بْنُ يَحْيَى وُهَيْبٌ أَوْلاَهُمَا عِنْدَنَا بِهَذَا