It is narrated from Sayyiduna Abu Ayyub al-Ansari (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) finished eating, he would recite this supplication: 'Alhamdu lillahil-ladhi at'ama wa saqa, wa sawwaghahu, wa ja'ala lahu makhraja' (All praise is for Allah, Who gave food and drink, made it pleasant to swallow, and made a way for it to come out).
Hadith Referenceالمعجم الأوسط / باب الميم / 5384
Hadith Takhrij«أخرجه ابن حبان فى «صحيحه» برقم: 5220، والنسائي فى «السنن الكبرى» برقم: 6867، 10044، وأبو داود فى «سننه» برقم: 3851، والطبراني فى «الكبير» برقم: 4082»