Agniveshyagrihyasutra 2.2.5.13

2.2.5.13

tena brahmāṇo vapatedamasyojemaṃ rayyā varcasā sam̐sṛjātha iti paścāt yena pūṣā bṛhaspateragnerindrasya cāpuṣe 'vapat tenade 'haṃ vapāmyasau ityuttarataḥ yathā jyok sumanā asāḥ \

'with that, O Brahmins, shave this [head] of his; endow him with vigour, wealth, and brilliance' — at the back; 'With which Pūṣan shaved Bṛhaspati's, Agni's, and Indra's [head] for long life, with that I shave [your head], O N.N., so that you may long be happy /' — on the north;