Vaishnava Dharmashastra 48.6

48.6

brahmā devānāṃ padavīḥ kavīnām ṛṣir viprāṇāṃ mahiṣo mṛgāṇām
śyeno gṛdhrāṇāṃ svadhitir vanānāṃ somaḥ pavitram atyeti rebhan //
iti darbhān badhnāti ||

'Soma, who is the highest priest among priests (gods), leader among the wise, Rishi among bards, the falcon among rapacious birds, the Svadhiti tree among trees, trickles murmuring through the filter.'
With these words he must fasten blades of Kusa grass (round the neck of the kettle).