Skandapurana 6.3.83.33

6.3.83.33

ātmayogabalenaiva brahmacaryaprabhāvataḥ .
īśvarasya prasādena liṅgaṃ kāmapradaṃ hi tat .
acchedyamapratarkyaṃ ca vināśotpattivarjitam .. 83.33 ..

by the power of his own yoga and the strength of his celibacy. / By the grace of Īśvara, that liṅga grants desires; / it cannot be severed, it is incomprehensible, and free from destruction and arising.