A suckling babe was brought to the Messenger of Allah (way peace be upon him) and he urinated in his tap. He (the Holy Prophet) sent for water and poured it over.
Sahih Muslim Book 2, Hadith 129
← Previous Hadith Babies were brought to the Messenger of Allah (ﷺ) and he blessed them, and after having chewed (something, e. g. dates or any other sweet thing) he rubbed there with their soft palates. A baby was brought to him and he passed water over him (over his garment), so he asked water to be brought and sprinkled it, but he did not wash it.

Sahih Muslim Book 2, Hadith 128 Next Hadith → Hisham narrated the hadith like one transmitted by Ibn Numair (the above mentioned one) with the same chain of transmitters.

Sahih Muslim Book 2, Hadith 130