Musnad Abu Ya'la al-Mawsili 150:447

Isma'il ibn Ibrahim al-Hudhali narrated to us, Ash'ath ibn 'Abd al-Rahman ibn Zubayd al-Ayami narrated to us, from 'Abd Allah ibn Sa'id, from his father, from Abu Salamah, from 'Aishah: That the Messenger of Allah (may Allah bless him and grant him peace) used to tilt the vessel for the cat, and it would drink from it, then he would perform ablution for prayer.