The Compendium of Caraka 6.16.101

6.16.101

dhātrīphalarasadroṇe cūrṇitaṃ lehavat pacet/
śītaṃ madhuprasthayutaṃ lihyāt pāṇitalaṃ tataḥ//

powdered, one should cook in a droṇa of the juice of dhātrī fruits like an electuary;
cooled and mixed with a prastha of honey, he should then lick a palmful of it.