Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:9:121 –

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.  

Nor expend they, therein ˹in the way of God˺, any sum, small, even if it be a single date, or great, nor do they cross a valley, during a ˹campaign˺ march, but it is recorded for them, as a righteous deed, that God may reward them the best of what they used to do, that is, the ˹due˺ reward thereof.
القرآن:٩:١٢١ –

وَلَا يُنْفِقُونَ نَفَقَةً صَغِيرَةً وَلَا كَبِيرَةً وَلَا يَقْطَعُونَ وَادِيًا إِلَّا كُتِبَ لَهُمْ لِيَجْزِيَهُمُ اللَّهُ أَحْسَنَ مَا كَانُوا يَعْمَلُونَ  

{ولا ينفقون} فيه {نفقة صغيرة} ولو تمرة {ولا كبيرة ولا يقطعون واديا} بالسير {إلا كُتب لهم} به عمل صالح {ليجزيهم الله أحسن ما كانوا يعملون} أي جزاءهم.