Hiranyakeshigrihyasutra 1.2.7.2

1.2.7.2

agnaye samidhamāhārṣaṃ bṛhate jātavedase \ yathā tvamagne samidhā samidhyasa evaṃ māṃ medhayā prajñayā prajayā paśubhirbrahmavarcasenānnādyena samedhaya svāhā \ ityekām \2\

One (of these pieces of wood he puts on the fire) with (the Mantra), 'To Agni I have brought a piece of wood, to the great Gâtavedas. As thou art inflamed, Agni, through that piece of wood, thus inflame me through wisdom, insight, offspring, cattle, holy lustre, and through the enjoyment of food. Svâhâ!'—