The dislike of looking at menstrual blood at night

It is narrated from Amrah bint Abd al-Rahman (may Allah have mercy on her) that the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), used to forbid women from examining their condition at night during the days of menstruation (to look for the sign of purity), and she would say: "It may be that (in the dim light of night) yellowness or turbidity (cannot be seen clearly and is taken for whiteness)."
The chain of this hadith is hasan (good), and Imam Ibn Abi Shaybah narrated it in al-Musannaf (no. 1060).

Sayyidah Fatimah bint al-Mundhir (may Allah have mercy on her) narrates from Sayyidah Asma (may Allah be pleased with her) that she used to teach matters of knowledge to us and to the daughters of her brother. So one of us would take the ritual bath (ghusl) after becoming pure from menstruation, and then continuous yellowness and turbidity, like menstruation, would come to her again. She (Sayyidah Asma, may Allah be pleased with her) would order us: "Refrain from performing the prayer until you see nothing but pure white discharge."
Imam Ishaq bin Rahwayh narrated this report (athar) in his Musnad. Its chain is hasan (good), and it is juristic evidence that yellowness and turbidity seen during the days of menstruation also take the ruling of menstruation until complete whiteness (the sign of purity) is seen.

It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she said: "One of us would take the ritual bath (ghusl) (on finishing menstruation or postnatal bleeding), and (even after the bath) her yellowness (that is, the trace of yellow discharge) would remain."
Imam Ishaq bin Rahwayh recorded this narration in his Musnad. Its chain contains an unnamed (mubham) woman from Quraysh; however, other sahih narrations support the point that yellowness or a muddy colour seen after the ritual bath of purification is not counted as menstruation.