A kinsman connected by offerings of balls of rice or of meat to common ancestors; the affinity extends to three individuals only in descent from the common ancestor; some authorities extend it to seven persons in both the ascending and the descending line. [Wilson’s Glossary]

Two persons are said to be sapindas of each other if one is a lineal ascendant of the other within the limits of sapinda relationship, or if they have a common lineal ascendant who is within the limits of sapinda relationship with reference to each of them. [Mitra’s Legal & Commercial Dictionary]