Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.4.19

2.3.4.19

tadu khalu tanūpā agne 'si | tanvaṃ me pāhyāyurdā agne 'syāyurme dehi varcodā agne 'si varco me dehi agne yanme tanvā ūnaṃ tanma āpraṇeti

Accordingly (he mutters the texts, V. S. III, 17), 'Thou, O Agni, art the protector of bodies: protect my body! Thou, O Agni, art the giver of life: give me life! Thou, O Agni, art the giver of vigour: give me vigour! O Agni, what defect there is in my body, supply that for me!'