Skandapurana 5.252.34

5.252.34

devatānāṃ ca pratyakṣaṃ tāṃḍavaṃ nartase yadi ..
pārayitvā vrataṃ samyagbrahmacaryaṃ maheśvara .. 33 [.
matprītyai yadi dehārthaṃ vaiṣṇavaṃ ca prayacchasi ..
śāpasyānugrahaṃ kuryāṃ prasavavadanā satī .. 34 ..

and if you dance the tāṇḍava in the direct sight of the deities, / properly completing the vow of celibacy, O Maheśvara, / and if, for my pleasure, you give half your body to Viṣṇu, / then, faithful and cheerful-faced, I shall grant grace from the curse.