Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 231.22

231.22

vyāseśvaradvayaṃ proktaṃ pitṛtīrthadvayaṃ tathā /
nandikeśvaratīrthe dve dvau ca gopeśvarau smṛtau //

two Vyāseśvaras are declared, and likewise two Pitṛtīrthas; / two are the pilgrimage places of Nandikeśvara, and two are remembered as Gopeśvaras;