The form which I see is eternally freed from material contamination and has advented to show mercy to the devotees as a manifestation of internal potency. This incarnation is the origin of many other incarnations, and I am born from the lotus flower grown from Your navel home.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
रूपं यदेतदवबोधरसोदयेन शश्वन्निवृत्ततमसः सदनुग्रहाय । आदौ गृहीतमवतारशतैकबीजं यन्नाभिपद्मभवनादहमाविरासम्
rūpaṃ yadetadavabodharasodayena śaśvannivṛttatamasaḥ sadanugrahāya | ādau gṛhītamavatāraśataikabījaṃ yannābhipadmabhavanādahamāvirāsam
SB 3.9.2