إِنْ جِئْتَ فِي الْمِيعَادِ ...
If you arrive at the appointed time ...
Standing alone, this is incomplete: the hearer cannot determine its consequence. If preceding discourse clearly established a promised meeting or reward, omission of the response could be meaningful, but without that clue a proposed completion remains conjectural.
Distinguish recognizing ellipsis from recovering one definite wording. Establishing that something is omitted does not authorize an invented full quotation.