And the explanation of the evidence that it is better to stand for a long time waiting for the praying person to finish his prayer rather than passing in front of him.

Hazrat Basar bin Saeed narrates that Zaid bin Khalid sent me to Hazrat Abu Juhaim (may Allah be pleased with him) to ask what sin is incurred by a person who passes in front of someone performing prayer. He replied that if he were to stand for forty (years or days), it would be better for him than passing in front of the one praying.