In the past, Malays also lived in groups according to their ancestral origin, which they called tribes. This group of descendants uses a patrilineal kinship line. But the Riau Malays who lived on the mainland Sumatra partially embraced matrilineal tribalism. There are also those who referthe tribe as a "hinduk" or a "cikal bakal". Each tribe is led by a leader. If the tribe lives in a village, then the head will be referred to as "Datuk Penghulu Kampung" or "Kepala Kampung". Each leader is also assisted by several figures such as "batin", "jenang", "tua-tua" dan "monti". Religious field leaders in the village are known as "imam" dan "khotib".