Although Indra was so powerful that he could neutralize the sinful reactions for killing a brāhmaṇa, he repentantly accepted the burden of these reactions with folded hands. He suffered for one year, and then to purify himself he distributed the reactions for this sinful killing among the earth, water, trees and women.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ब्रह्महत्यामञ्जलिना जग्राह यदपीश्वरः । संवत्सरान्ते तदघं भूतानां स विशुद्धये
brahmahatyāmañjalinā jagrāha yadapīśvaraḥ | saṃvatsarānte tadaghaṃ bhūtānāṃ sa viśuddhaye
SB 6.9.6