AVŚ, 18, 4, 60.1 pra vā etīndur indrasya niṣkṛtiṃ sakhā sakhyur na pra mināti saṃgiraḥ /

ṚV, 9, 86, 16.1 pro ayāsīd indur indrasya niṣkṛtaṃ sakhā sakhyur na pra mināti saṃgiram /

ṚV, 10, 89, 9.1 pra ye mitram prāryamaṇaṃ durevāḥ pra saṃgiraḥ pra varuṇam minanti /