Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 223.6

223.6

tataḥ prabhṛti vikhyātaṃ tīrthaṃ tadvāsavāhvayam /
tasmiṃstīrthe mahārāja yo bhaktyā pūjayecchivam /
yathālabdhopahāraiśca dīpaṃ dadyāt prayatnataḥ //

From that time forward, that pilgrimage place became renowned under the name Vāsava. / Whosoever worships Śiva with devotion at that pilgrimage place, O great king, / and carefully gives a lamp with whatever offerings are obtained,