Mudgalapurana 2.8.2

2.8.2

govadbhakṣaṇasaṃyuktaḥ paśuvatpakṣivatkadā |
mūtrādidehaceṣṭāṃ sa cakāra munisattamaḥ ||

Sometimes he ate like a cow, sometimes behaved like a beast, like a bird; / that best of sages performed bodily functions like urination [in public].