Atharva Veda 2.27

For victory in disputation: with a plant

May [my] foe by no means win (ji) the dispute; overpowering, overcoming art thou; smite the dispute of [my] counter-disputant; make them sapless, O herb.

The eagle discovered (anu-vid) thee; the swine dug thee with his snout: smite the dispute etc. etc.

Indra put (kŗ) thee on his arm, in order to lay low (stŗ) the Asuras: smite the dispute etc. etc.

Indra consumed (vi-aç) the pāṭá, in order to lay low the Asuras: smite the dispute etc. etc.

With it will I overpower the foes, as Indra did the sālāvṛkás: smite the dispute etc. etc.

O Rudra, thou of healing (?) remedies, of dark (nī́la) crests, deed-doer! smite the dispute etc. etc.

Do thou smite the dispute of him, O Indra, who vexes us; bless us with abilities (çákti); make me superior in the dispute.