Muhammad bin Haneen narrates: I heard Abdullah bin Abbas (may Allah be pleased with them) expressing amazement at the person who starts fasting a day before the month of Ramadan begins. Abdullah bin Abbas (may Allah be pleased with them) said: The Prophet (peace and blessings of Allah be upon him) said: "When you see it (the new moon), then start fasting, and when you see it, then stop fasting, and if it is cloudy for you, then complete the count to thirty."