SB 9.18.1
sri-suka uvaca
yatir yayatih samyatir
ayatir viyatih krtih
sad ime nahusasyasann
indriyaniva dehinah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Sukadeva Gosvami said: O King Pariksit, as the embodied soul has six senses, King Nahusa had six sons, named Yati, Yayati, Samyati, Ayati, Viyati and Krti.