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