Shiva Purana

siva.sh/siva-purana/saturda-samhita/19/26

विष्णोरंशात्स्त्रियान्तस्यामत्रेर्दत्तो व्यजायत ।। संन्यासपद्धतिर्येन वर्द्धिता परमा मुने ।। २६ ।।

sanskrit

O sage, the part of Viṣṇu was born of that lady, wife of Atri, as Datta by whom the great path of renunciation was expanded.

english translation

viSNoraMzAtstriyAntasyAmatrerdatto vyajAyata || saMnyAsapaddhatiryena varddhitA paramA mune || 26 ||

hk transliteration by Sanscript