**With regard to cats eating food or drinking water, that does not make the food or water naajis (impure), because of the report narrated in Sunan Abi Dawood and elsewhere, which says that a woman brought some hareesah (a kind of food) to ‘Aa’ishah (may Allaah be pleased with her) and found her praying. (‘Aa’ishah) gestured to her that she should put it down. Then a cat came and ate some of it. When ‘Aa’ishah had finished praying, she ate from where the cat had eaten and said, “The Messenger of Allaah (peace and blessings of Allaah be upon him) said: ‘They (cats) are not naajis (impure), rather they are among those who go around among you (al-tawwaafeena ‘alaykum).’ I saw the Messenger of Allaah (peace and blessings of Allaah be upon him) doing wudoo’ with water from which a cat had drunk.”
According to another report narrated by Abu Dawood (68) from Kabshah bint Ka’b ibn Maalik, who was married to Ibn Abi Qutaadah, Abu Qutaadah entered and she poured some water for him to do wudoo’. A cat came and drank from the water, and he tipped the vessel for it so that it could drink. Kabshah said: “He saw me looking at him and he said, ‘Do you find it strange, O daughter of my brother?’ I said, ‘Yes.’ He said, ‘The Messenger of Allaah (peace and blessings of Allaah be upon him) said, “They (cats) are not naajis (impure), rather they are among those who go around among you (al-tawwaafeena ‘alaykum).”’” These two reports were classed as saheeh by al-Bukhaari, al-Daaraqutni and others, as was stated in al-Talkhees by Ibn Hajar, 1/15.
“Those who go around among you (al-tawwaafeena ‘alaykum)” means that they are like servants who are with people in their houses, i.e., cats are always with people, in their houses and among their vessels and furnishings, etc., and this is something that cannot be helped.