Hadith 801
Mu`adh bin Anas (May Allah be pleased with him) reported:
وعن معاذ بن أنس رضى الله عنه أن رسول الله صلى الله عليه وسلم قال: " من ترك اللباس تواضعاً لله، وهو يقدر عليه، دعاه الله يوم القيامة على رؤوس الخلائق حتى يخيره من أي حلل الإيمان شاء يلبسها" .((رواه الترمذي))
The Messenger of Allah (ﷺ) said, "Whoever gives up wearing elegant and expensive garments out of humbleness, when he can do so, Allah will call him on the Day of Resurrection, before all of creation, He will give him the choice to wear whichever garment of Iman he would like to wear." [At-Tirmidhi].
In plain words
Whoever could afford fine clothes but gives them up out of humility before Allah will be honored before all creation and offered the garments of faith. What is set aside for Allah is returned far greater.
Reference : Riyad as-Salihin 801 In-book reference : Book 3, Hadith 24