Shiva Purana

siva.sh/siva-purana/rudra-samhita/82/39

द्वारकायां यदा स्थित्वा पुत्रानुत्पादयिष्यति।। तदा कृष्णस्तु रुक्मिण्यां काममुत्पादयिष्यति ।।३९।।

sanskrit

Kṛṣṇa will beget Kāma in Rukmiṇī when he goes to Dvārakā and begins to procreate children.

english translation

dvArakAyAM yadA sthitvA putrAnutpAdayiSyati|| tadA kRSNastu rukmiNyAM kAmamutpAdayiSyati ||39||

hk transliteration by Sanscript