تساجلوا

They vied, competed, or contended for superiority, one with another; emulated, or rivalled, one another; or imitated one another; [originally, in the drawing of water: and hence, (assumed tropical:) in other things: (see 3:)] (S, TA:) and هُمَا يَتَسَاجَلَانِ They two vie, &c., each with the other. (K.)