Surah At-Tawba
وَلَا يُنفِقُونَ نَفَقَةًۭ صَغِيرَةًۭ وَلَا كَبِيرَةًۭ وَلَا يَقْطَعُونَ وَادِيًا إِلَّا كُتِبَ لَهُمْ لِيَجْزِيَهُمُ ٱللَّهُ أَحْسَنَ مَا كَانُوا۟ يَعْمَلُونَ
“Nor do they spend an expenditure, small or large, or cross a valley but that it is registered for them that Allah may reward them for the best of what they were doing.”
Translation: Saheeh International
Reflection — Ibn Kathir
وَلاَ يُنفِقُونَ
(Neithr do they spend), in reference to the fighters in Allah's cause,
نَفَقَةً صَغِيرَةً وَلاَ كَبِيرَةً
Reflection — Maarif ul Quran
Commentary
The two verses cited above admonish those who missed to join the expedition of Tabuk for no valid reason. They have also been told that they did what was not proper. Then the verses describe the merits of people who take part in Jihad and tell us about the great rewards they get for everything they do there. Included here is the causing of hurt or loss to the enemy and the using of a strategy that infuriates the adversary. All these are good deeds, and worthy of thawab (reward from Allah).
What does this verse bring up for you today?