Does fosterage prohibit the same relations as kinship?

Chapter on What is Prohibited to Marry and Combining Between Them and Other Matters

Al-Mughni

Book of Marriage

Book 35 · Issue 8 · Bab 2

Open in Qurani

Primary text

Fosterage prohibits the same relations as kinship: mothers, daughters, sisters, paternal aunts, maternal aunts, daughters of the brother, and daughters of the sister, based on the narration, "Fosterage prohibits what lineage prohibits" (Muttafaq 'Alayh), and in another narration, "Fosterage prohibits what birth prohibits" (Muslim). The prohibition of mothers and foster-sisters is explicitly textual, while the rest fall under the general scope of other forbidden relatives mentioned in the text.

Supporting text

The majority of scholars agree that fosterage prohibits the same relations as kinship. Some innovators, specifically the Rafidah and Khawarij, do not uphold this prohibition or the established Sunnah concerning combining sisters.