Skandapurana 12.24

12.24

yathā sītā parityaktā yathā saumitriṇā kṛtaḥ ..
parityāgaḥ svakīyasya saṃtyaktena mahātmanā .. .. 24 ..

how Sītā had been abandoned, how the abandonment of his own self / was made by the son of Sumitrā when abandoned by the magnanimous one;