Skandapurana 6.3.221.27

6.3.221.27

trikālamekakālaṃ vā yo bhaktyā pūjayecchivam .
navaprasūtāṃ dhenuṃ ca dattvā pārtha dvijottame .
ṣaṣṭivarṣasahasrāṇi śivaloke mahīyate .. 221.27 ..

Whoever worships Śiva with devotion three times or once a day, / and having given a freshly calved cow to an excellent twice-born, O son of Pṛthā, / is glorified in the world of Śiva for sixty thousand years.