Hadith 4:230
'Abbad ibn al-'Awwam narrated to us, from Hisham, from al-Hasan, who said: "If a man has eaten the suhur (pre-dawn meal), then the fast has become obligatory upon him. If he breaks it, then he must make it up."
حدثنا عباد بن العوام عن هشام عن الحسن قال إذا تسحر الرجل فقد وجب عليه الصوم فإن أفطر فعليه القضاء