Islamic Fiqh > Marriage and family > Breastfeeding and its legal effects (rada'a)
Milk creates kinship: how many sucklings create the marriage impediment, who becomes milk-kin, and the schools' divergences.
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Updated on 31 August 2026 at 3:55 AM
The rule is unanimous: what birth forbids, breastfeeding forbids, according to the verse "your mothers who nursed you, and your sisters through nursing" (an-Nisa 23). Thus the Prophet said about the daughter of Hamza: "what breastfeeding forbids, birth forbids" (al-Bukhari 2502 ; Muslim 1447). Aisha also reported from the Prophet: "what breastfeeding forbids is what birth forbids", in one version: "what lineage forbids".
The jurists agree to prove nursing by testimony. For the Hanafis, women's words alone do not suffice: two men are needed, or a man with two trustworthy women, since milk may be given other than by suckling. If the wife claims her husband is her milk-brother and he denies it, her word is not held against him: she is suspected of wanting the breakup; if the marriage was not consummated, she gets nothing of the mahr among Malikis, and the mahr's fate varies by case among Hanbalis.
If the infant cannot live without milk, nursing becomes obligatory by consensus, even if the mother refuses. The divorced mother who finished her waiting period is not obliged to nurse, unless no other wet nurse exists (al-Baqara 233). If she nurses, her wage is due; the wife still married nursing her child, the fatwa is that she nurses without taking a wage from her husband, for the Hanafis and one Shafi'i view, unless no other can be found.
Nursing creates lasting family ties: check them before a marriage, and establish them with witnesses when they shape a couple's future. For a specific case, consult a scholar.