In Nothwest Iran, among the Tâleshis, marriages between Sunnites ans Shiites are not exceptional. In this case, traditionally the sons receive their religious affiliation from their father, the daughters from their mother.
Paper long abstract:
Kinship and religious affilation in Tâlesh
In northwest Gilān, among the Tāleshis, there is a significant Sunnite minority ; traditionally, there is, in this region, a mutual acceptance of religious differences between Shiites and Sunnites, even if there is an authoritative shiitization since Islamic revolution. The different religious affiliation does not exclude matrimonial alliances; marriages between Sunnites and Shiites are not exceptional. In this case, traditionally the sons receive their religious affiliation from their father, the daughters from their mother. This will be illustrated by case studies and recent developments will be scrutinized.