Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/6/27

अहं कुतस्ते पुत्रोद्य त्वं माता कुत एव च।। वृथाभिमानः पुत्रत्वे मातृत्वे च विचार्य्यताम्।। २७।।

sanskrit

Whence am I your son? Whence are you my mother? This fond consciousness of sonhood and motherhood is futile. Ponder.

english translation

ahaM kutaste putrodya tvaM mAtA kuta eva ca|| vRthAbhimAnaH putratve mAtRtve ca vicAryyatAm|| 27||

hk transliteration by Sanscript