Mu`adh bin Anas (May Allah be pleased with him) reported:
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 and before all the creations, He will give him the choice to wear whichever garment of Iman he would like to wear."[At-Tirmidhi].
App reference: Book 4, Hadith 24
Arabic/English book reference: Book 4, Hadith 802