Hazrat Abu Huraira was asked about performing ablution with water left over by a woman, so he replied, "We used to sit around a large vessel and take water from it, and we would perform ghusl from it as well."

Hazrat Nafi' reports that Hazrat Ibn Umar (may Allah be pleased with them) did not consider it objectionable to perform ablution with water used by a woman; however, if the woman was experiencing menstruation or was in a state of major ritual impurity, then he would advise caution.

Hazrat Ibn Abbas (may Allah be pleased with both of them) was asked about the ruling regarding a woman's leftover (food), so he replied that a woman is a delicate and pure thing.

Hazrat Ibn Umar (may Allah be pleased with them both) says that if a woman is not affected by menstruation or impurity, then there is no harm in what she leaves behind.

Ibrahim says that there is no harm in what a woman leaves behind.

Hazrat Ikrimah says that there is no harm in performing ablution with the leftover water which a woman has used for ablution.

Hazrat Ata was asked about performing ablution with the leftover water of a menstruating woman, so he replied that there is no harm in it.

Hazrat Abdullah bin Abbas (may Allah be pleased with them both) narrates that once one of the noble wives of the Prophet Muhammad (peace and blessings be upon him) performed ghusl (ritual bath) from a large vessel of water. When the Prophet Muhammad (peace and blessings be upon him) intended to perform ghusl or wudu from that water, she said, "O Messenger of Allah! I was in a state of janabah (major ritual impurity)." He replied, "Water does not become impure."