A man and his wife had a case of Lian (or Mula'ana) during the lifetime of the Prophet (ﷺ) and the man denied the paternity of her child. The Prophet (ﷺ) gave his verdict for their separation (divorce) and then the child was regarded as belonging to the wife only.
Sahih al-Bukhari Book 85, Hadith 25
← Previous Hadith Regarding the Holy Verse:--'And to everyone, We have appointed heirs..' And:-- (4.33) 'To those also to Whom your right hands have pledged.' (4.33) When the emigrants came to Medina, the Ansar used to be the heir of the emigrants (and vice versa) instead of their own kindred by blood (Dhawl-l-arham), and that was because of the bond of brotherhood which the Prophet (ﷺ) had established between them, i.e. the Ansar and the emigrants. But when the Divine Verse:-- 'And to everyone We have appointed heirs,' (4.33) was revealed, it cancelled the other, order i.e. 'To those also, to whom Your right hands have pledged.'

Sahih al-Bukhari Book 85, Hadith 24 Next Hadith → `Utba (bin Abi Waqqas) said to his brother Sa`d, "The son of the slave girl of Zam`a is my son, so be his custodian." So when it was the year of the Conquest of Mecca, Sa`d took that child and said, "He is my nephew, and my brother told me to be his custodian." On that, 'Abu bin Zam`a got up and said, 'but the child is my brother, and the son of my father's slave girl as he was born on his bed." So they both went to the Prophet. Sa`d said, "O Allah's Messenger (ﷺ)! (This is) the son of my brother and he told me to be his custodian." Then 'Abu bin Zam`a said, "(But he is) my brother and the son of the slave girl of my father, born on his bed." The Prophet (ﷺ) said, "This child is for you. O 'Abu bin Zam`a, as the child is for the owner of the bed, and the adulterer receives the stones." He then ordered (his wife) Sauda bint Zam`a to cover herself before that boy as he noticed the boy's resemblance to `Utba. Since then the boy had never seen Sauda till he died.

Sahih al-Bukhari Book 85, Hadith 26