Lady Aisha (may Allah be pleased with her) narrates: The Noble Prophet (peace and blessings be upon him) would pour a vessel towards the cat, and the cat would drink water from it. Then the Noble Prophet (peace and blessings be upon him) would perform ablution using the water left over by the cat.

Sayyida Kabsha bint Ka'b (may Allah be pleased with her) narrates, who was the wife of one of the sons of Sayyiduna Abu Qatadah (may Allah be pleased with him): Once, Sayyiduna Abu Qatadah al-Ansari (may Allah be pleased with him) entered the house, so this woman placed water for his ablution. During this, a cat came so that it could drink from the water, so Sayyiduna Abu Qatadah (may Allah be pleased with him) tilted the vessel towards it, and the cat drank the water. The woman narrates: When Sayyiduna Abu Qatadah (may Allah be pleased with him) looked at me and saw that I was looking at him attentively, he asked: "O my niece! Are you surprised at this?" The woman narrates: I replied: "Yes!" So Sayyiduna Abu Qatadah (may Allah be pleased with him) said: "The Noble Prophet (peace and blessings be upon him) has said: This (cat) is not impure, rather it is one of those animals that move around among you."

Imam Ja'far al-Sadiq, may Allah have mercy on him, narrates from his father (Imam Muhammad al-Baqir, may Allah have mercy on him): It was asked from Sayyiduna Ali, may Allah be pleased with him (or perhaps Imam Zayn al-Abidin, may Allah have mercy on him), about the leftover water of a cat. He replied: "It is included among the beasts, and there is no harm in it (i.e., in its leftover water)."