SB 8.24.40
astirya darbhan prak-kulan
rajarsih prag-udan-mukhah
nisasada hareh padau
cintayan matsya-rupinah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
After spreading kusa with its tips pointing east, the saintly King, himself facing the northeast, sat down on the grass and began to meditate upon the Supreme Personality of Godhead, Visnu, who had assumed the form of a fish.