SB 9.13.26
sunakas tat-suto jajñe
vitahavyo dhrtis tatah
bahulasvo dhrtes tasya
krtir asya mahavasi
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The son of Rta was Sunaka, the son of Sunaka was Vitahavya, the son of Vitahavya was Dhrti, and the son of Dhrti was Bahulasva. The son of Bahulasva was Krti, and his son was Mahavasi.