It is narrated from Sayyiduna Mu'adh bin Anas al-Juhani (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever eats food and says: 'Praise be to Allah who fed me this and provided it for me without any might or power on my part,' his past sins are forgiven. And whoever puts on a garment and says: 'Praise be to Allah who clothed me with this and provided it for me without any might or power on my part,' his past sins are forgiven."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17524