Śrīmad-Bhāgavatam · Text 4.2.35
Who is speaking and story frame
आप्लुत्यावभृथं यत्र गङ्गा यमुनयान्विता ।
विरजेनात्मना सर्वे स्वं स्वं धाम ययुस्तत: ॥ ३५ ॥
āplutyāvabhṛthaṁ yatra
gaṅgā yamunayānvitā
virajenātmanā sarve
svaṁ svaṁ dhāma yayus tataḥ
My dear Vidura, carrier of bows and arrows, all the demigods who were performing the sacrifice took their bath at the confluence of the Ganges and the Yamunā after completing the yajña performance. Such a bath is called avabhṛtha-snāna. After thus becoming purified in heart, they departed for their respective abodes.
Read Śrīla Prabhupāda's purport on Vedabase.io