Chapter 18: The Book of Suckling
' A' isha (Allah be pleased with her) reported: My foster-uncle Abu' l Ja' d (kunya of Aflah) sought permission from me, which I refused. (Hisham said to me that Abu' l-Ja' d was in fact Abu' l-Qu' ais). When Allah' s Apostle (ﷺ) came, I (' A' isha) informed him about it. He said: Why did you not permit him? Let your right hand or hand be besmeared with dust.
Sahih Muslim 1445h