pitari bhramsite sthanad
indranya dharsanad dvijaih
prapite ’jagaratvam vai
yayatir abhavan nrpah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Because Nahusa, the father of Yayati, molested Indra’s wife, Saci, who then complained to Agastya and other brahmanas, these saintly brahmanas cursed Nahusa to fall from the heavenly planets and be degraded to the status of a python. Consequently, Yayati became the king.