SB 6.14.43

vidveṣa-naṣṭa-matayaḥ
 striyo dāruṇa-cetasaḥ
garaṁ daduḥ kumārāya
 durmarṣā nṛpatiṁ prati
Synonyms: 
vidveṣa-naṣṭa-matayaḥ — whose intelligence was lost in envy; striyaḥ — the women; dāruṇa-cetasaḥ — being very hardhearted; garam — poison; daduḥ — administered; kumārāya — unto the boy; durmarṣāḥ — being intolerant; nṛpatim — the King; prati — upon.
Translation: 
As their envy increased, they lost their intelligence. Being extremely hardhearted and unable to tolerate the King’s neglect, they finally administered poison to the son.