In Chapter "the merit of hunger and austere life", we have cited statements related to this chapter.
802/1 - Mu‘ādh ibn Anas (may Allah be pleased with him) reported that the Prophet (may Allah’s peace and blessings be upon him) said: “Whoever gives up wearing elegant expensive clothes out of humbleness with Allah, while he can afford it, Allah will call him on the Day of Judgment before all people and let him choose whichever of the garments of faith he would like to wear.” [Al-Tirmidhi; he classified it as sound]
1) A person should wear clothing that suits the situation. If he is in the gathering of people wearing simple clothing, it is incumbent upon him to give up elegant clothes out of humility before Allah Almighty and being considerate of the feelings of those around him. But if he is in the company of rich and elegantly-dressed people, he can wear similar clothes.
2) Allah Almighty undertakes to adorn those who abandon adornment out of humbleness to Him and renouncement of worldly pleasures. Verily, the reward is of the same type of the deed.