vakyena

vākyena — words; BG 3.2
guru-vākyena — by the order of his spiritual master; SB 9.8.5-6
vākyena — through the words; SB 10.66.19
vākyena — by words; SB 11.26.16
vipra-vākyena — by the words of the brāhmaṇa; SB 12.5.10