Matsya Purana 252.6

252.6

tadidānīṃ pravakṣyāmi vāstuśāstramanuttamam.
purāndhakavadhe ghore ghorarūpasya śūlinaḥ .. 252.5

Which I will now relate to you In days gone by, perspiration (water) trickled from the forehead of Śiva at the time of His fighting fiercely with the demon Andhaka in course of which the latter was killed, and out of this sweat of the fatigued Śiva was born an attendant grim in appearance who looked as if to swallow the whole universe with seven islands and the sky He then began to drink the blood of the Andhaka demons that lay scattered on the ground, but he was not satisfied with it Then that hungry attendant began to practise tapasya with the object of devouring the three regions in honour of Śiva The Lord Śiva in due time was highly pleased with the devotee and asked him to select a boon.—5-10 The devotee said —"Lord! be pleased to permit me to eat of the three realms" and the Lord said —"Be it so " Then that devotee beseiged and brought all the three regions, under his clutches and then fell down on this earth —11-12