Answer: The definition of a journey is nine hours by the clock. Should the traveller stop in a place, anticipating that he will stay there for no less than one month by the Bayán reckoning, it is incumbent on him to keep the Fast; but if for less than one month, he is exempt from fasting. If he arriveth during the Fast at a place where he is to stay one month according to the Bayán, he should not observe the Fast till three days have elapsed, thereafter keeping it throughout the remainder of its course; but if he come to his home, where he hath heretofore been permanently resident, he must commence his fast upon the first day after his arrival.