Śatapatha Brāhmaṇa ("of a hundred paths") 8.6.3.22

8.6.3.22

sampracyavadhvamupa samprayāteti | amūnetadṛṣīnāha samenam pracyavadhvamupa cainaṃ samprayātetyagne patho devayānānkṛṇudhvamiti yathaiva yajustathā bandhuḥ punaḥ kṛṇvānā pitarā yuvāneti vākca vai manaśca pitarā yuvānā vākca manaścaitāvagnī anvātāṃsīttvayi tantumetamiti yo 'sāvṛṣibhistantustatastametadāha

[The fifth brick, with, Vâg. S. XV, 53], 'Gather ye together! draw ye nigh together!'--he thereby says to those Rishis, 'Gather ye him together! draw ye nigh to him together!'--'Make ye Agni's paths to lead to the gods!'--as the text so the meaning;--'making the parents young again,'--the young parents, doubtless, are speech and mind, and these two fires also are speech and mind;--'in thee hath he spun out this thread,'--he thereby means that thread (of the sacrifice) which has been spun out by the Rishis.