Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 7

Sanskrit:

राजा स कुण्डिनपति: पुत्रस्‍नेहवशानुग: ।शिशुपालाय स्वां कन्यां दास्यन् कर्माण्यकारयत् ॥ ७ ॥

ITRANS:

rājā sa kuṇḍina-patiḥputra-sneha-vaśānugaḥśiśupālāya svāṁ kanyāṁdāsyan karmāṇy akārayat

Translation:

King Bhīṣmaka, the master of Kuṇḍina, having succumbed to the sway of affection for his son, was about to give his daughter to Śiśupāla. The King saw to all the required preparations.

Purport:

Śrīla Śrīdhara Svāmī points out in this connection that King Bhīṣmaka had no particular liking for Śiśupāla but rather acted out of attachment for his son Rukmī.