SB 9.23.13
yo ’sau ganga-tate kridan
mañjusantargatam sisum
kuntyapaviddham kaninam
anapatyo ’karot sutam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
While playing on the bank of the Ganges, Adhiratha found a baby wrapped up in a basket. The baby had been left by Kunti because he was born before she was married. Because Adhiratha had no sons, he raised this baby as his own. [This son was later known as Karna.]