Manava Dharmashastra 1.58

1.58

idaṃ śāstraṃ tu kṛtvāsau mām eva svayam āditaḥ
vidhivad grāhayām āsa marīcyādīṃs tv ahaṃ munīn //

But he having composed these Institutes (of the sacred law), himself taught them, according to the rule, to me alone in the beginning; next I (taught them) to Mariki and the other sages.