Ye va dvisanti nindanti - Brahma Vaivarta Purana (4.97.49)

Ye va dvisanti nindanti - Brahma Vaivarta Purana (4.97.49)

Ye va dvisanti nindanti papinasca hasanti ca,
Krishnapranadhikam deva devincha radhikam param.
Brahmahatyashatam te cha labhante natra samshayah.
Tat papena cha pacyante kumbhipake cha raurave.

- Brahma Vaivarta Purana, Section 4 [ShriKrishn Janam Khand], Chapter 97, Verse 49/50 (4.97.49)

Those sinful people who hate, insult, or mock the supreme goddess Sri Radha, who is as dear to Sri Krishna as his own life, undoubtedly acquire the sin of killing a hundred Brahmins. Due to that sin, they suffer in the hells of Kumbhipaka and Raurava.