Skandapurana 7.15.12_126

7.15.12_126

sūkṣmarūpastato bhūtvā sa śukro munisattamaḥ .
śukravanniḥsṛto liṅgād devadevasya dhīmataḥ . . 17..

Then assuming a subtle form, that Śukra, best among sages, / issued forth like semen (śukra) from the liṅga of the wise God of gods.