Musannaf Ibn Abi Shaybah

Hazrat Maqool says that a woman should not perform the ghusl of menstruation until she sees white purity as a bowl.

Hazrat Ibn Jurayj says that I asked Hazrat Ata what is "tuhr"? He replied: It is the extreme state of whiteness in which there is neither yellowishness nor wateriness.

Hazrat Yahya bin Saeed says that I sent a messenger to the mother of Ra'itah. He came and informed me that Umm 'Amrah used to say to women that when any of you inserts cotton wool in her private part and finds its color changed (i.e., stained), she should not pray until she sees something (i.e., blood) (i.e., blood).

Hazrat Yunus bin Yazid says that I asked Hazrat Zuhri about the yellowish and muddy discharge that comes after menstruation, so he said that it is also menstruation; a woman should not pray until she becomes pure from it.

Hazrat Fatimah bint al-Mundhir says that we were under the upbringing of Hazrat Asma bint Abi Bakr along with her granddaughters. Sometimes, when one of us became pure and started praying, she would notice a little yellowish discharge. Regarding this, we asked Hazrat Asma. She said, "You should refrain from praying until you see pure whiteness."

The daughter of Hazrat Zaid bin Thabit received the news that women request a lamp at night to check for purity. She considered this act objectionable and said that they do not need to do so.