They are your brothers from your suckling mother only Q. I suckled from a woman alongside one of her children, thereafter her husband passed away so she completed her waiting period, married another man and bore his children. Are her children from her second husband my brothers? A. If the situation is as you have mentioned in the question and you suckled from her five times or more whilst you were younger than two years then her children from her first husband are your brothers from your suckling mother and father. Her children from her second husband are your brothers from your suckling mother only. This is due to the saying of Allaah, Glory be to Him, whilst mentioning the unmarriageable women in Soorah anNisaa: “Forbidden to you are your mothers and your daughters…” [AnNisaa: 23] Following this, He said: “…and your suckling mothers who suckled you and your sisters in suckling…” [AnNisaa: 23] Also due to the saying of the Prophet (saw): “It becomes forbidden by suckling those relationships that are forbidden by kinship.” Agreed upon its authenticity.1 Sheikh Ibn Baaz [Fataawa Islaamiyyah: 3/341]
1
By Bukhaari and Muslim.