Does an adopted son inherit along with the (biological) children after his mother breastfed him for two years, and is it permissible for him to interact with the women of the family?

The parents are thanked for their kindness to the foundling. If the foundling was suckled by the mother five times or more during the first two years of life, he is her son and her husband's son through suckling, and a brother to all their children through suckling, due to Allah's saying: (and your sisters through suckling), and the Prophet's (peace be upon him) saying: (Suckling makes unlawful what lineage makes unlawful), and Aisha's hadith: (Five known sucklings make unlawful). It is not permissible for the foundling to be attributed to the father, nor does he inherit from him. If the father bequeaths to the foundling one-third or less, there is no harm in that, and you may maintain ties with him and show him kindness.