Can the rule "what is minor is overlooked" be applied to every minor issue in fiqh, or does it have specific conditions and controls?

The statement that minor issues are forgiven is not a consistent jurisprudential rule, as not every minor issue is forgiven. Jurists have agreed that prayer is invalidated by intentional speech, even if minor, and that passing gas invalidates ablution, even if minor.

Jurists have differed on many minor issues, including: 1. Minor impurity: Hanbalis believe it is not forgiven, while the majority of jurists believe minor impurity is forgiven. 2. Exposure of awrah during prayer: Shafiis and Malikis believe that prayer is invalidated by any exposure, even if minor. 3. Brief silence during Al-Fatiha with the intention of قطع (interruption): Shafiis believe the recitation is invalid, while Hanbalis believe it is forgiven. 4. Wiping over a torn khuff (leather slipper): Some jurists permitted wiping over it if the tear was minor, while others prohibited it.

The point is that forgiveness for minor issues is not a consistent rule applicable to all minor issues.