The Messenger of Allah ﷺ said, "Three things, by Him in whose hand is the soul of Muhammad, I would swear to them. No wealth is diminished by charity, so give in charity. No servant pardons an injustice done to him, seeking thereby the face of Allah, except that Allah raises him by it." Abu Saeed, the freed slave of Banu Hashim, said in his version, "except that Allah increases him in honor by it on the Day of Resurrection. And no servant opens a door of begging except that Allah opens upon him a door of poverty."
حدثنا عفان حدثنا أبو عوانة عن عمر بن أبي سلمة عن أبيه قال حدثني قاص أهل فلسطين قال سمعت
إن رسول الله ﷺ قال ثلاث والذي نفس محمد بيده إن كنت لحالفا عليهن لا ينقص مال من صدقة فتصدقوا ولا يعفو عبد عن مظلمة يبتغي بها وجه الله إلا رفعه الله بها وقال أبو سعيد مولى بني هاشم إلا زاده الله بها عزا يوم القيامة ولا يفتح عبد باب مسألة إلا فتح الله عليه باب فقر
Its isnad is daif, due to the unidentified status of the storyteller of the people of Palestine. As for Umar bin Abu Salama bin Abdul-Rahman bin Awf, he is reliable, though Shubah and others declared him daif. Nasai said, "He is not strong," but Ahmad affirmed his strength. Ibn Shahin said in Thiqat, "Ahmad bin Hanbal said, 'He is upright and reliable, Allah willing.'" Ibn Hibban also mentioned him in Thiqat, and in Tahdhib al-Tahdhib, quoting Tarikh Bukhari, it is said, "He is truthful, except that he contradicts others in some of his hadiths." Tirmidhi and Ibn Main graded his hadith as sahih.The hadith is found in Zawaid 3:105, where it says, "Ahmad, Abu Yaala, and Bazzar narrated it, and it contains an unnamed man." In K, the wording is, "By the One in whose hand is my soul," which matches what is in Zawaid, while the version here is a copy with a marginal note. The word "attributed" is an addition from K.