SB 10.78.33
sri-bhagavan uvaca
carisye vadha-nirvesam
lokanugraha-kamyaya
niyamah prathame kalpe
yavan sa tu vidhiyatam
Translation:
The Personality of Godhead said: I will certainly perform the atonement for this killing, since I wish to show compassion to the people in general. Please, therefore, prescribe for Me whatever ritual is to be done first.