Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 39

Sanskrit:

बन्धुर्वधार्हदोषोऽपि न बन्धोर्वधमर्हति ।त्याज्य: स्वेनैव दोषेण हत: किं हन्यते पुन: ॥ ३९ ॥

ITRANS:

bandhur vadhārha-doṣo ’pina bandhor vadham arhatityājyaḥ svenaiva doṣeṇahataḥ kiṁ hanyate punaḥ

Translation:

[Again addressing Kṛṣṇa, Balarāma said:] A relative should not be killed even if his wrongdoing warrants capital punishment. Rather, he should be thrown out of the family. Since he has already been killed by his own sin, why kill him again?

Purport:

To further encourage Lady Rukmiṇī, Balarāma again emphasizes that Kṛṣṇa should not humiliate Rukmī.