Mudgalapurana 4.9.22

4.9.22

duḥkhitaṃ māṃ viditvā tvaṃ saṃsthito munisattama |
sākṣāt prajāpatiḥ proktaḥ pulastyo brahmaṇaḥ sutaḥ ||

Knowing me to be suffering, you have remained here, O best of sages;
you are declared to be Pulastya, the manifest Prajāpati, the son of Brahmā.