SB 10.64.43
brahmanartho hy apahrto
hartaram patayaty adhah
ajanantam api hy enam
nrgam brahmana-gaur iva
Translation:
When a brahmana’s property is stolen, even unknowingly, it certainly causes the person who takes it to fall down, just as the brahmana’s cow did to Nrga.
Purport:
The Lord here demonstrates that His instructions are not theoretical but practical, as seen concretely in the case of Nrga Maharaja.