كتاب اللباس
Read the English translation first, with the original Arabic directly underneath.
Narrated Mu'adh ibn Anas:
The Prophet (ﷺ) said: If anyone eats food and then says: "Praise be to Allah Who has fed me with this food and provided me with it through no might and power on my part," he will be forgiven his former and later sins. If anyone puts on a garment and says: "Praise be to Allah Who has clothed me with this and provided me with it through no might and power on my part," he will be forgiven his former and later sins.
مَنْ أَكَلَ طَعَامًا ثُمَّ قَالَ الْحَمْدُ لِلَّهِ الَّذِي أَطْعَمَنِي هَذَا الطَّعَامَ وَرَزَقَنِيهِ مِنْ غَيْرِ حَوْلٍ مِنِّي وَلاَ قُوَّةٍ غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ وَمَا تَأَخَّرَ وَمَنْ لَبِسَ ثَوْبًا فَقَالَ الْحَمْدُ لِلَّهِ الَّذِي كَسَانِي هَذَا الثَّوْبَ وَرَزَقَنِيهِ مِنْ غَيْرِ حَوْلٍ مِنِّي وَلاَ قُوَّةٍ غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ وَمَا تَأَخَّرَ