Musannaf Ibn Abi Shayba 1:1287

Abu Bakr narrated to us, he said: Sufyan ibn ‘Uyaynah narrated to us, from al-Zuhri, from ‘Ubayd Allah, from Umm Qays bint Mihsan, who said: I entered upon the Messenger of Allah (may Allah bless him and grant him peace) with a son of mine who had not yet eaten food. He urinated upon him, so he (the Prophet) called for water and sprinkled it.