It is narrated from Sayyiduna Mu'adh bin Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever eats food and says: 'Al-hamdu lillahi alladhi at'amani hadha wa razaqanihi min ghayri hawlin minni wa la quwwah' (All praise is for Allah, who fed me this and provided it for me without any means or power on my part), his past sins will be forgiven. And whoever puts on a garment and says: 'Al-hamdu lillahi alladhi kasani hadha wa razaqanihi min ghayri hawlin minni wa la quwwah' (All praise is for Allah, who clothed me with this and provided it for me without any means or power on my part), his past sins will be forgiven." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.