Śatapatha Brāhmaṇa ("of a hundred paths") 4.3.3.16

4.3.3.16

taṃ devāḥ | sarvasminvijite 'bhaye 'nāṣṭre yatheṣīkām muñjādvivṛhedevaṃ sarvasmātpāpmano vyavṛhanyanmāhendraṃ grahamagṛhṇaṃstatho evaiṣa etadyatheṣīkā vimuñjā syādevaṃ sarvasmātpāpmano nirmucyate yanmāhendraṃ graham gṛhṇāti

When all was conquered and free from danger and injury, the gods plucked him from out of all evil--even as one might pluck out a reed from its sheath--when they drew the cup for the Great Indra. And even as the reed becomes leafless, so is he thereby freed from all evil, when one draws the Mâhendra cup.