Matsya Purana 274.26

274.26

puṇyāṃ tithimathāsādya kṛtvā brāhmaṇavācanam.
ṣor̤aśāratnimātrantu daśadvādaśavākarān .. 274.25

'King Manu had put the following question to the Lord Janârdana, which I heard and now shall try to make clear according to my understanding Please listen to it—16 flowers, etc , should be strewn there, and above the beam of the scales a canopy of five colours should be erected. Afterwards those versed in the Vedas, handsome in appearance, of nice disposition, knowing all the rituals, born in the Bhāratavarṣa, should be made the priests, and the man accomplished in the Vedānta, born in an Aryan family, knowing Purāṇas, of cheerful disposition, wearing white clothes, earrings, a golden girdle, armlets and other ornaments, should be made the Preceptor (Guru)—33-38