Agniveshyagrihyasutra 3.2.4.1

3.2.4.1

eṣa te pitāmaha piturmadhumām̐ ūrmissarasvān yāvān vāyuścāntarikṣaṃ ca tāvatyasya mātrā tāvānasya mahimā tāvantamenaṃ bhūtaṃ dadāmi yayā vāyurakṣito 'nupadasta evaṃ me pitāmahāya pitre 'kṣito 'nupadastaḥ svadhā bhavatāṃ tvam̐ svadhāmakṣitaṃ taiḥ sahopajīvāsau yajūm̐ṣi te mahimā \

“This is your sweet, flowing wave, O grandfather, father! As great as are the wind and the intermediate space, so great is its measure, so great is its greatness. As vast as it has become, so vast do I give it. Just as the wind is unexhausted and unfailing, so may this be unexhausted and unfailing svadhā for my grandfather, the father! O so-and-so, live upon that unexhausted svadhā together with them! The Yajus-formulas are your greatness!”