A measure of bhiksā (accepting food etc. by going to houses for collecting them in conformity with the canonical instruction);
the quantity of bhikṣā - food, drinks etc., given to an ascetic (Muni) by hand or a container without breaking the flow. (If the flow breaks, it is one Datti; again if it is given, then it is second Datti, and so on).
tatra karasthālādibhyo'vyavacchinnadhārayāyā patati bhikṣā sā dattirabhidhiyate.
(Prasā 197 Vṛ Pa 45)