CC Ādi 14.7

gṛhe dui jana dekhi laghupada-cihna
tāhe śobhe dhvaja, vajra, śaṅkha, cakra, mīna
gṛhe — at home; dui jana — the father and mother; dekhi — seeing; laghu-pada-cihna — the marks of the lotus feet, which were very small at that time; tāhe — in those; śobhe — which were beautifully visible; dhvaja — flag; vajra — thunderbolts; śaṅkha — conchshell; cakra — disc; mīna — fish.
When the Lord tried to walk, in His small footprints the specific marks of Lord Viṣṇu were visible, namely the flag, thunderbolt, conchshell, disc and fish.