Why is the midday and afternoon prayer not combined for the sake of rain?

Question:
Honorable Shaykh, may Allah grant you success. He says: Why is there a distinction in combining the midday and afternoon prayers versus the sunset and night prayers regarding rain, such that the midday and afternoon prayers are not combined?

Answer:
Is there any evidence for this? There is no evidence for combining the midday and afternoon prayers. Also, regarding the midday and afternoon prayers, people are out doing their work, unlike the sunset and night prayers, when they are finished with their work and need warmth and to be in their homes. There is a difference between them. Yes.