Wealth is not decreased by donation

وعن أبي هريرة رضي الله عنه أن رسول الله صلى الله عليه وسلم قال‏:‏ “ما نقصت صدقة من مال، و ما زادالله عبداً بعفو إلا عزاً، وما تواضع أحد لله إلا رفعه الله
رواه مسلم
Meaning:
Abu Hurairah (May Allah be pleased with him) reported: Messenger of Allah صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ said, "Wealth is not decreased by giving Sadaqah (charity). Allah increases the dignity of one who forgives; and one who bocomes humble for the sake of Allah, Allah will raise him ( in dignity )."
Muslim