What Is Attributed to Shahrur
Shahrur says that “exceeding the measure within the sphere of the lawful without crossing the dividing line into the forbidden” is wastefulness. He defines extravagance as “transgressing the dividing line between the lawful and the forbidden.” Accordingly, he explicitly states that they are not synonymous: “Extravagance occurs only in the sphere of the forbidden. As for wastefulness, it occurs only in the sphere of the lawful.” He presents this distinction in discussing verses 26–27 of al-Israʾ.
Atlas Explanation
The difference here concerns the domain of the action: wastefulness occurs within what the text regards as lawful, but exceeds the “measure,” whereas extravagance crosses the dividing line into the forbidden. Thus, in reading this passage, the two terms should not be used as names for the same thing.
Conclusion
This distinction separates two forms of action in the structure of Shahrur’s statement: exceeding the measure within the lawful, and crossing the dividing line between the lawful and the forbidden. This is an explanatory distinction within the structure of Shahrur’s statement, not the addition of a new criterion for determining the measure.
Open Question and Limits of Reading
The documented passage here does not explain how the “measure” is determined in different cases of spending or use; therefore, the page does not infer a detailed criterion from this witness alone.