Paraskaragrihyasutra 2.2.7

2.2.7

athainaṃ vāsaḥ paridhāpayati yenendrāya bṛhaspatirvāsaḥ paryadadhādamṛtaṃ tena tvā paridadhāmyāyuṣe dīrghāyutvāya balāya varcasa iti \7\

He then makes him put on a garment with (the verse), 'In the way in which Brihaspati put the garment of immortality on Indra, thus I put (this garment) on thee, for the sake of long life, of old age, of strength, of splendour.'