«يُرِيدُ اللَّهُ بِكُمُ الْيُسْرَ وَلَا يُرِيدُ بِكُمُ الْعُسْرَ»
Allah intends ease for you and does not intend hardship for you.
In discussing dispensations involving fasting, illness, and travel, the book links ease and the avoidance of difficulty to the meaning of the effective cause. The specific legal circumstances for dispensations remain relevant; a general appeal to convenience cannot independently replace them.
The example helps distinguish wisdom or suitability from an unrestricted license to invent exceptions. A transferable legal cause must remain grounded in the sources.