Muslims are required to pay attention to their appearance, making sure that their clothing is beautiful and clean, especially when dealing with others and when performing the prayers, as the Qur’an states, “Children of Adam, wear your best clothes to every mosque.” (Soorat Al-A‛raaf, 7:31)
Allah ﷻ has permitted people to wear nice clothes and put on a good appearance, as doing so is one aspect of remembering Allah’s blessings upon them. As the Qur’an states, “Say, ‘Who has forbidden the adornment of Allah, which He has brought forth for His servants and the good things, clean and pure, which Allah has provided for them?’ Say, ‘They are [lawful] for the believers in the present life but they shall be exclusively for them on the Day of Resurrection.’ Thus We explain Our signs for a people who understand.” (Soorat Al-A‛raaf, 7:32)
Muslim Attire 