Abu Hurairah (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "Wealth does not diminish by giving Sadaqah (charity). Allah augments the honour of one who forgives; and one who serves another seeking the pleasure of Allah, Allah will exalt him in ranks."[Muslim]. (DE)
Arabic/English book reference (DE): Book 1, Hadith 603 (DE)