Skandapurana 16.202.75

16.202.75

snātvā tatra varārohe sarasvatyabdhisaṃgame ..
rāmeśvaretināmānaṃ tataḥ saṃpūjya śaṃkaram ..
godānaṃ tatra deyaṃ tu samyagyātrāphalepsubhiḥ .. 75 ..

Having bathed there, O woman of fair hips, at the confluence of the Sarasvatī and the ocean, / and then fully worshipping Śaṃkara named Rāmeśvara, / the gift of a cow should be given there by those desiring the full fruit of the pilgrimage.