All the children of your wet-nurse are your siblings from all her husbands
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Question: I was breastfed by a woman along with one of her sons. Then her husband passed away, she completed her waiting period, and she married another man, from whom she had sons. Are the sons of this last man my brothers?
Answer: If the situation is as described in the question, and you were breastfed by her five times or more while you were within the two-year period, then her children from the first husband are your brothers and sisters from both your father and mother through breastfeeding, and her children from the second husband are your brothers and sisters from your mother only through breastfeeding. This is based on the statement of Allah the Exalted, when He mentioned the prohibited relatives in Surat al-Nisa, in His saying:[An-Nisa 4:23], and then He said after that: [al-Nisa: 23]. It is also based on the saying of the Prophet (peace and blessings be upon him): Sahih Muslim 1445i, which is agreed upon as authentic.
Answer: If the situation is as described in the question, and you were breastfed by her five times or more while you were within the two-year period, then her children from the first husband are your brothers and sisters from both your father and mother through breastfeeding, and her children from the second husband are your brothers and sisters from your mother only through breastfeeding. This is based on the statement of Allah the Exalted, when He mentioned the prohibited relatives in Surat al-Nisa, in His saying:
Prohibited to you [for marriage] are your mothers, your daughters
حُرِّمَتْ عَلَيْكُمْ أُمَّهَاتُكُمْ وَبَنَاتُكُمْyour [milk] mothers who nursed you, your sisters through nursing
وَأُمَّهَاتُكُمُ اللاَّتِي أَرْضَعْنَكُمْ وَأَخَوَاتُكُم مِّنَ الرَّضَاعَةِon account of fosterage as one is Mahram on account of consanguinity
يحرم من الرضاعة ما يحرم من النسب
Source
binbaz.org.sa
The Arabic text is copied verbatim from the original source, without any edits.