9:92
وَلَا عَلَى ٱلَّذِينَ إِذَا مَآ أَتَوْكَ لِتَحْمِلَهُمْ قُلْتَ لَآ أَجِدُ مَآ أَحْمِلُكُمْ عَلَيْهِ تَوَلَّوا۟ وَّأَعْيُنُهُمْ تَفِيضُ مِنَ ٱلدَّمْعِ حَزَنًا أَلَّا يَجِدُوا۟ مَا يُنفِقُونَ
Nor [is there blame] upon those who, when they came to you that you might give them mounts, you said, "I can find nothing for you to ride upon." They turned back while their eyes overflowed with tears out of grief that they could not find something to spend [for the cause of Allah].
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
Legitimate Excuses for staying away from Jihad
Allah mentions here the valid excuses that permit one to stay away from fighting. He first mentions the excuses that remain with a person, the weakness in the body that disallows one from Jihad, such as blindness, limping, and so forth. He then mentions the excuses that are not permanent, such as an illness that would prevent one from fighting in the cause of Allah, or poverty that prevents preparing for Jihad. There is no sin in these cases if they remain behind, providing that when they remain behind, they do not spread malice or try to discourage Muslims from fighting, but all the while observing good behavior in this state, just as Allah said,
مَا عَلَى الْمُحْسِنِينَ مِن سَبِيلٍ وَاللَّهُ غَفُورٌ رَّحِيمٌ
(No means (of complaint) can there be against the doers of good. And Allah is Oft-Forgiving, Most Merciful.) Al-Awza`i said, "The people went out for the Istisqa' (rain) prayer. Bilal bin Sa`d stood up, praised Allah and thanked Him then said, `O those who are present! Do you concur that wrong has been done' They said, `Yes, by Allah!' He said, `O Allah! We hear your statement,
مَا عَلَى الْمُحْسِنِينَ مِن سَبِيلٍ
(No means (of complaint) can there be against the doers of good.) O Allah! We admit our errors, so forgive us and give us mercy and rain.' He then raised his hands and the people also raised their hands, and rain was sent down on them." Mujahid said about Allah's statement,