It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Charity does not decrease wealth; through pardoning, Allah increases a person in honour; and whoever humbles himself for the sake of Allah, Allah raises him up."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21090