Question: What is the ruling on breaking the Fast forgetfully during the daytime in Ramadaan?
Answer: Anyone who unintentionally breaks his Fast during the daytime in Ramadaan should complete his Fast, and there is nothing wrong with him. Allaah (Exalted be He) says: Our Lord! Punish us not if we forget or fall into error The Prophet (peace be upon him) said: If anyone eats or drinks forgetfully while fasting, he should complete his Sawm, for it was Allaah (Exalted be He) Who fed him and gave him drink. (Agreed upon by Al-Bukhaaree and Muslim)... read more here.