«التَّعْلِيقُ إِنَّمَا هُوَ فِي زَمَانِ التَّكَلُّمِ لَا فِي الِاسْتِقْبَالِ»
The act of making the conditional connection happens at the time of speaking, not in the future.
This resolves a subtle objection. The speaker now states that if something occurs later, a corresponding result will follow. Making the statement now and the events described occurring later are different temporal perspectives.
If I say today, “If he comes tomorrow, we will be pleased,” the sentence is uttered today but the coming and the pleasure concern tomorrow. Futurity belongs to the occurrences conveyed, not to the act of utterance.