Suckle him, and you will become unlawful for him (in marriage), and (the discomfort) which Abu Hudhayfah feels in his heart will disappear
‘Ā’ishah (may Allah be pleased with her) reported that Sālim, the freed slave of Abu Hudhayfah, was with Abu Hudhayfah and his family in their home. Bint Suhayl came to the Prophet (may Allah's peace and blessings be upon him) and said: "Sālim has attained puberty, and he now perceives what they perceive, yet he enters our house freely, and I believe that something (troubles) the heart of Abu Hudhayfah." Thereupon the Prophet (may Allah's peace and blessings be upon him) said to her: "Suckle him, and you will become unlawful for him (in marriage), and (the discomfort) which Abu Hudhayfah feels in his heart will disappear." She returned and said: "So I suckled him, and what (was there) in the heart of Abu Hudhayfah disappeared."
Authentic hadithNarrated by Muslim