“I once asked abu ‘ Abd Allah (a.s.), about a man who comes out of his house to travel and he is fasting. He (the Imam) said, ‘If he has come out before midday he is required to stop fasting and complete its Qada’ (compensatory fast) but if he has come out after Zawal (declining of the sun toward the west at noontime), he is required to complete his fast (of that day).”’