The compiler of this book—may Allah سبحانه وتعالى be pleased with him—comments: This verse has also been narrated as being revealed concerning Amir al-Mu'minin عليه السلام. The reason for its revelation was that he had four dirhams: he gave one as charity at night, one during the day, one secretly, and one openly. Hence, this verse was revealed concerning him. It is understood that when a verse is revealed regarding a specific case, it applies to all similar situations. Thus, while its specific interpretation is in regard to Amir al-Mu'minin عليه السلام, it also applies to spending on horses and similar acts of charity.
Commentary #1