Srimad-Bhagavatam: Canto 4 - Chapter 1 - Verse 8
Sanskrit:
नास्मत्कुलोचितं तात कर्मैतत्सद्विगर्हितम् ।वधो यदुपदेवानामारब्धस्तेऽकृतैनसाम् ॥ ८ ॥
ITRANS:
nāsmat-kulocitaṁ tātakarmaitat sad-vigarhitamvadho yad upadevānāmārabdhas te ’kṛtainasām
Translation:
My dear son, the killing of the sinless Yakṣas which you have undertaken is not at all approved by authorities, and it does not befit our family, which is supposed to know the laws of religion and irreligion.