Skandapurana 5.144.34

5.144.34

koṭayastu trayastriṃśaddevānāṃ sāyudhāstataḥ ..
rakṣārthaṃ tasya liṃgasya tasminkṣetre vyavasthitāḥ ..
māghakṛṣṇacaturdaśyāṃ susaṃnaddhāḥ prahāriṇaḥ .. 34 ..

Then thirty-three crores of gods, bearing weapons,
stationed themselves in that sacred field to protect that liṅga,
fully armed and ready to strike on the fourteenth day of the dark fortnight of Māgha.