ثُمَّ الْخَبَرُ قَدْ يَقَعُ مَوْقِعَ الْإِنْشَاءِ
A declarative can sometimes stand in place of an expressive or directive utterance.
The normal role of a declarative is to assert a proposition; requestive inshāʾ expresses a command, wish, or prayer. Nevertheless a surface declarative may carry the communicative force normally conveyed by an inshāʾ construction.
Separate sentence form from intended speech act. In particular, a past-tense expression can function as a prayer for an event that has not yet occurred.