gerund with emphatic particle eva
Analysis. samādāya (gerund of samādadāti, 'takes together') + eva (emphatic particle 'indeed, just'); the gerund marks the action as completed before the main verb, and eva underscores the immediacy or decisiveness of that action.
Etymology. saṁ + ā + √dā: 'placing together toward'. The root √dā (give, place) appears in Sanskrit dāti and English 'do' in the sense of 'put in place'. The prefix saṁ (together, like Latin con-) brings things into unity; ā (toward the speaker) reverses the direction of simple giving into a taking-up or assumption. The compound samādāya ('taking together') is the gerund form, used adverbially to mark a prior action.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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