Shiva Purana
हंसडिम्भौ नृपौ कौचित्सावमानकरौ खलौ ॥ दत्त्वा निदेशं च हरेर्नाशयामास स प्रभुः ॥ ६७ ॥
That holy sage gave directive to Viṣṇu and destroyed two wicked kings who had insulted him in the form of two young ones of swans.
english translation
haMsaDimbhau nRpau kaucitsAvamAnakarau khalau ॥ dattvA nidezaM ca harernAzayAmAsa sa prabhuH ॥ 67 ॥
hk transliteration by Sanscript