رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 548
The Book of Miscellany
Excellence of Generosity and Spending in a Good cause with Reliance on Allah
وَعَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: “قَالَ اللَّهُ تَعَالَى: انفق يَا ابْن آدم ينفق عليك” ((مُتَّفَقٌ عَلَيْهِ)).
Abu Hurairah (May Allah be pleased with him) reported: Messenger of Allah (ﷺ) said, "Allah, the Exalted, says, 'Spend, O son of Adam, you will also be spent upon." [Al-Bukhari and Muslim].
Riyad as-Salihin, 548