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:64:17 –

If you loan Allah a goodly loan, He will multiply it for you and forgive you. And Allah is Most Appreciative and Forbearing.  

If you lend God a good loan, by giving voluntary alms out of the goodness of ˹your˺ hearts, He will multiply it for you (yudā‘ifhu: a variant reading has yuda‘‘ifhu), from tenfold up to seven hundredfold or more for each one — this ˹loan˺ being the giving of voluntary alms out of the goodness of the heart — and He will forgive you, whatever He will, and God is Appreciative, rewarding of obedience, Forbearing, in refraining from ˹always˺ punishing disobedience;
القرآن:٦٤:١٧ –

إِنْ تُقْرِضُوا اللَّهَ قَرْضًا حَسَنًا يُضَاعِفْهُ لَكُمْ وَيَغْفِرْ لَكُمْ ۚ وَاللَّهُ شَكُورٌ حَلِيمٌ  

{إن تقرضوا الله قرضا حسنا} بأن تتصدقوا عن طيب قلب {يضاعفه لكم} وفي قراءة يضعفه بالتشديد بالواحدة عشرا إلى سبعمائة وأكثر {ويغفر لكم} ما يشاء {والله شكور} مجاز على الطاعة {حليم} في العقاب على المعصية.