Devibhagavatapurana 3.29.51

3.29.51

punaḥ prāptaṃ nijasthānaṃ kāle viparivartite |
nahuṣaḥ patito bhūmau śāpādajagarākṛtiḥ ||

Again, when time changed, he got his own post back; and the king Nahusa fell down on this earth and became transformed into a boa constrictor (a big serpent), through the curse of a Risi.