Shiva Purana

siva.sh/siva-purana/rudra-samhita/92/25

सर्वेषामिह भूतानामहमात्मा सुमध्यमे।। निर्विकारी निरीहश्च भक्तेच्छोपात्तविग्रहः ।।२५।।

sanskrit

O slender-waisted lady, of all living beings I am the soul without abberation without yearnings. I take up bodies at the requests and wishes of my devotees.

english translation

sarveSAmiha bhUtAnAmahamAtmA sumadhyame|| nirvikArI nirIhazca bhaktecchopAttavigrahaH ||25||

hk transliteration by Sanscript