Kin Groups. The village commune of the Tats consisted of family-kinship groups ( bona ), each incorporating several families ( hanavadæ ) . The law of inheritance was regulated by Sharia (Quranic law) and, infrequently, by adat (traditional law). With the death of the head of the family the immovable property was inherited by the sons; daughters received only movable property, each receiving one-third of the allotment of their brothers. In addition the oldest brother received an increment for seniority and the youngest an increment for marriage expenses. On the death of a husband the widow retained the rights to his property in accordance with Sharia.
Kinship Terminology. Kinship was calculated along paternal and maternal lines. Kinship along a direct line was referred to with special terms, along indirect lines descriptively. The basic Iranian terms of kinship were retained, and others were borrowed from the Azerbaijani language. To the first group belong may (mother), piyær (father), kælæmay (grandmother), kælæpiyær (grandfather), zæn (wife), shÿvær (husband), dukhtær (daughter), birar (brother), khuvar (sister), birarzæræ (brother's son or daughter), and khuvarzæræ (sister's son or daughter). The second group includes nükÿrdæ (bride, groom), balduz (wife's sister), qeiin (wife's brother), qeiinata (father-in-law), qeinana (mother-in-law), æmiqïiï (female first cousin on the father's side), æmioghleï (male first cousin on the father's side), khælæ (maternal aunt), dayi (maternal uncle), æmæ (paternal aunt), æmi (paternal uncle), and nævæ (grandson).