Vaishnava Dharmashastra 73.2

73.2

dvitīye 'hni śuklapakṣasya pūrvāhṇe kṛṣṇapakṣasyāparāhṇe viprān susnātān svācāntān yathābhūyo vayaḥkrameṇa kuśottareṣv āsaneṣūpaveśayet ||

On the next day, in the forenoon, if it falls in the bright half of the month, and in the afternoon, if it falls in the dark half of the month, the Brâhmanas, who must have duly bathed and duly sipped water, must be placed by him, in the order of their seniority' (or) of their sacred knowledge, upon seats covered with Kusa grass.