Agnipurana 75.61

75.61

oṃ hāṃ rudrebhyaḥ svāhā pūrve mātṛbhyo dakṣiṇe tathā /
vāruṇe hāṃ gaṇebhyaś ca svāhā tebhyastvayaṃ baliḥ //

'Oṃ hāṃ to the Rudras svāhā' in the east; likewise to the Mothers in the south; / in the west, 'hāṃ to the Gaṇas svāhā, this food offering is for them';