Muwatta Imam Malik (Riwayat Yahya)

Imam Malik, may Allah have mercy on him, said: Similarly, if a woman who has undergone li'an is an Arab and her husband acknowledges the boy as his son, then the boy will be joined to his father. As long as the husband does not acknowledge him, the inheritance of that boy will be given to his mother and uterine brothers, and whatever remains will belong to the Muslims. And the inheritance of the boy born from li'an goes to the mawali of his mother because, as long as her husband has not acknowledged him, neither does the boy have lineage nor any 'asaba. When the husband acknowledges, the lineage is established, and he will be joined to his 'asaba.