If before travelling eight farsakhs one becomes unsure about continuing his journey, and while he is unsure he travels some distance and later decides to continue with his journey, then in the event that the total outward and return journey minus the distance he travelled while he was unsure is less than eight farsakhs, he must perform tamām prayers. If it is not less than eight farsakhs, his prayers must be in qaṣr form.
Fourth condition: before travelling eight farsakhs, one must not intend to pass through his home town and stay there, or to stay in a place for ten or more days. Therefore, if before travelling eight farsakhs someone intends to pass through his home town and stay there, or to stay in a place for ten or more days, he must perform tamām prayers. If he intends to pass through his home town without staying there, he must, as a precautionary measure, perform both qaṣr and tamām prayers.