YV 4.2j

While (the fire) was flaming upwards to strike, just then of itself it stayed; whether so much was before [1], or so much was over the fire, be sprang up alive and came into union with Agni and Soma. He grew on all sides an arrow(shot), he enveloped these worlds. Because he enveloped these worlds, therefore is Vrtra, Vrtra. Indra feared him, and Tvastr too; Tvastr dipped his bolt for him; the bolt was fervour; he could not restrain it. Visnu [2] was another god; he said, 'Visnu, come hither; we will grasp that by which he is this world. Visnu deposited himself in three places, a third on the earth, a third in the atmosphere, a third in the sky, for he was afraid of his growth. By means of the third on earth Indra raised his bolt, aided by Visnu. He said, 'Hurl it not at me; there is this [3] strength in me; I will give it to you.' He gave it to him, he accepted it, and (saying), 'Thou didst further me', gave it to Visnu. Visnu accepted it (saying), 'Let Indra place power (indriya) in us.' By means of the third in the atmosphere Indra raised his bolt, aided by Visnu. He said, 'Hurl it not at me; there is this [4] strength in me; I will give it to you.' He gave it to him; he accepted it, and (saying), 'Twice hast thou furthered me', gave it to Visnu. Visnu accepted it (saying), 'Let Indra place power in us.' By means of the third in the sky Indra raised his bolt, aided by Visnu. He said, 'Hurl it not at me; I will give to thee that by which I [5] am this world! He said, 'Yes.' (He replied), 'Let us make a compact; let me enter thee.' 'If thou dost enter me, in what way wilt thou enjoy me?' 'I will kindle thee; I will enter thee for thine enjoyment', he answered. Vrtra entered him. Vrtra is the belly; hunger is man's enemy; he who [6] knows this slays the enemy hunger. He gave it to him; he accepted it, and (saying), 'Thrice hast thou furthered me', gave it to Visnu. Visnu accepted it (saying), 'Let Indra place power in us.