Shatapatha Brahmana 4.3.3.15

4.3.3.15

atha mahendraṃ grahaṃ gṛhṇāti | pāpmanā vā etadindraḥ saṃsṛṣṭo 'bhūdyadviśā marudbhiḥ sa yathā vijayasya kāmāya viśā samāne pātre 'śnīyādevaṃ tadyadasmā etam marudbhiḥ samānaṃ grahamagṛhṇan

Thereupon he draws the Mâhendra cup. For Indra was then bound up with evil, in the shape of the people, the Maruts; as one might, for the sake of victory, eat from the same vessel with the people so it was when they drew a cup for him in common with the Maruts.