Śrī Sūta Gosvāmī said: Hearing this from the Personality of Godhead, Arjuna touched water for purification, and after circumambulating Lord Śrī Kṛṣṇa, he cast his brahmāstra weapon to counteract the other one.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
सूत उवाच । श्रुत्वा भगवता प्रोक्तं फाल्गुनः परवीरहा । स्पृष्ट्वापस्तं परिक्रम्य ब्राह्मं ब्राह्माय सन्दधे
sūta uvāca | śrutvā bhagavatā proktaṃ phālgunaḥ paravīrahā | spṛṣṭvāpastaṃ parikramya brāhmaṃ brāhmāya sandadhe
SB 1.7.29