Paraskaragrihyasutra 2.4.3

2.4.3

pradakṣiṇamagniṃ paryukṣyottiṣṭhantsamidhamādadhāti agnaye samidhamahārṣa bṛhate jātavedase \ yathā tvamagne samidhā samidhyasa evamahamāyuṣā medhayā varccasā prajayā paśubhirbrahmavarcasena samindhe jīvaputro mamācāryo medhāvyahamasānyanirākāriṣṇuryaśasvī tejasvī brahmavarcasyannādo bhūyāsaṃ svāheti \3\

Having sprinkled (water) round the fire from left to right, he stands up and puts a piece of wood on (the fire) with (the texts),
'To Agni I have brought a piece of wood, to the great Gâtavedas. As thou, Agni, art inflamed by wood, thus I am inflamed by life, insight, vigour, offspring, cattle, holy lustre.
'May my teacher be the father of living sons; may I be full of insight, not forgetful (of what I have learned); may I become full of glory, of splendour, of holy lustre, an enjoyer of food. Svâhâ!