Skandapurana 3.3.2.51

3.3.2.51

ataḥ pativratāyāstvaṃ śāpaṃ bhuṃkṣva yatholbaṇam..
adyaprabhṛti nārīṣu yadā tvamapi saṃgataḥ .
tadā mṛtistavetyuktvā viveśa jvalanaṃ satī .. 51 ..

Therefore suffer the terrible curse of a devoted wife: / From this day forth, whenever you unite with women, / then your death shall occur!” Having spoken thus, the faithful wife entered the fire. / 51