hetuna
hetunā — for the reason; BG 9.10
hetunā — ground; SB 1.4.3
hetunā — due to some cause; SB 2.8.7
brahma-hetunā — due to realization of the Absolute Truth; SB 3.33.24-25
hetunā — on account of; SB 4.21.30
hetunā — for the purpose; SB 11.7.27