mārjanaṃ yajñapātrāṇāṃ pāṇinā yajñakarmaṇi / camasānāṃ grahāṇāṃ ca śuddhiḥ prakṣālanena tu //
At sacrifices the purification of (the Soma cups called) Kamasas and Grahas, and of (other) sacrificial vessels (takes place) by rubbing (them) with the hand, and (afterwards) rinsing (them with water).