SB 9.16.16
vilapyaivam pitur deham
nidhaya bhratrsu svayam
pragrhya parasum ramah
ksatrantaya mano dadhe
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Thus lamenting, Lord Parasurama entrusted his father’s dead body to his brothers and personally took up his axe, having decided to put an end to all the ksatriyas on the surface of the world.