Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 42
Sanskrit:
एवं सन्दह्यमानानां सपत्न्या: पुत्रसम्पदा ।राज्ञोऽसम्मतवृत्तीनां विद्वेषो बलवानभूत् ॥ ४२ ॥
ITRANS:
evaṁ sandahyamānānāṁsapatnyāḥ putra-sampadārājño ’sammata-vṛttīnāṁvidveṣo balavān abhūt
Translation:
Śrī Śukadeva Gosvāmī continued: Being neglected by their husband and seeing Kṛtadyuti’s opulence in possessing a son, Kṛtadyuti’s co-wives always burned in envy, which became extremely strong.