When wearing new clothes, say: 'Alhamdu lillahil-ladhi kasani hadha wa razaqanihi min ghayri hawlin minni wa la quwwah' — Praise be to Allah Who has clothed me with this and provided it for me without any power or strength from me. This dua expresses gratitude and humility.
الْحَمْدُ لِلَّهِ الَّذِي كَسَانِي هَذَا وَرَزَقَنِيهِ مِنْ غَيْرِ حَوْلٍ مِنِّي وَلَا قُوَّةٍ
Alhamdu lillahil-ladhi kasani hadha wa razaqanihi min ghayri hawlin minni wa la quwwah.
Meaning: Praise be to Allah Who has clothed me with this and provided it for me without any power or strength from me.
Source: Sunan Abu Dawud #4023Hz. Peygamber (sallallahu aleyhi ve sellem) taught that whoever says bu dua when wearing new clothes will have his past sins forgiven (Sunan Abu Dawud 4023). This dua transforms a mundane act into worship by acknowledging that all provision — including clothing — comes solely from Allah's grace, not from one's own ability.
الْحَمْدُ لِلَّهِ الَّذِي كَسَانِي هَذَا وَرَزَقَنِيهِ مِنْ غَيْرِ حَوْلٍ مِنِّي وَلَا قُوَّةٍ
When the Messenger of Allah (peace be upon him) put on a new garment, he would name it and say: 'Alhamdu lillahil-ladhi kasani hadha wa razaqanihi min ghayri hawlin minni wa la quwwah.'