Are the girl and the boy considered my siblings through rada'ah (breastfeeding), knowing that I was breastfed by my paternal aunt, my father's sister, for four months, and one of the girls and one of the boys from among our relatives were extensively breastfed by her?

Suckling establishes the same prohibitions as lineage, for the Prophet, peace and blessings be upon him, said: "Suckling prohibits what lineage prohibits." So, whoever is suckled by a woman with five full and satisfying sucklings or more becomes a son to her and to her husband, the owner of the milk, and a brother to all who were suckled by her the same number of times.