Abdur Rahman ibn ‘Awf reported: The Messenger of Allah, peace and blessings be upon him, said, “By the One in whose hand is the soul of Muhammad, there are three I would swear an oath upon. Charity does not decrease wealth, so give in charity. No servant forgives wrongdoing, by which he seeks the countenance of Allah, but that Allah will increase his honor on the Day of Resurrection. And no servant opens the door of begging but that Allah will open the door of poverty.”
Source: Musnad Aḥmad 1674
Grade: Sahih li ghayrihi (authentic due to external evidence) according to Al-Albani
عَنْ عَبْد الرَّحْمَنِ بْن عَوْفٍ قَالَ قَالَ رَسُولُ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ ثَلاثٌ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ إِنْ كُنْتُ لَحَالِفًا عَلَيْهِنَّ لَا يَنْقُصُ مَالٌ مِنْ صَدَقَةٍ فَتَصَدَّقُوا وَلا يَعْفُو عَبْدٌ عَنْ مَظْلَمَةٍ يَبْتَغِي بِهَا وَجْهَ اللهِ إِلا زَادَهُ اللهُ بِهَا عِزًّا يَوْمَ الْقِيَامَةِ وَلا يَفْتَحُ عَبْدٌ بَابَ مَسْأَلَةٍ إِلا فَتَحَ اللهُ عَلَيْهِ بَابَ فَقْرٍ
1674 مسند أحمد بن حنبل
814 المحدث الألباني خلاصة حكم المحدث صحيح لغيره في صحيح الترغيب