Hiranyakeshigrihyasutra 1.1.4.6

1.1.4.6

athāsmā ajinamuttarīyaṃ karoti \ mitrasya cakṣurdharuṇaṃ dharīyastejoyaśasvi sthaviraṃ samiddham \ anāhanasyaṃ vasanaṃ jariṣṇu parīdaṃ vājyajinaṃ dhatsvāsau \ aditiste kakṣāṃ badhnātu vedasyānuvaktavai medhāyai śraddhāyā anūktasyānirākaraṇāya brahmaṇe brahmavarcasāya \ iti \6\

He then arranges for him the skin (of an antelope, &c., see Sûtra 7) as an outer garment, with (the Mantras),
'The firm, strong eye of Mitra, glorious splendour, powerful and flaming, a chaste, mobile vesture, this skin put on, a valiant (man), N.N.!
'May Aditi tuck up thy garment, that thou mayst study the Veda, for the sake of insight and belief and of not forgetting what thou hast learnt, for the sake of holiness and of holy lustre!'