مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٢٩٣ - Prayers of a Traveller

complete prayers so long as he does not start journeying, and it is not necessary that he should make a determination again for staying for ten days.
١٣٥٧. A traveller, who determines to stay at a place for ten days, should observe the obligatory fast; he may also observe a recommended fast and offer fridayprayers and Nafila (recommended everyday prayers) of midday, afternoon and night prayers.
١٣٥٨. If a traveller, who has determined to stay at a place for ten days, wishes, after offering a prayers of four units or after staying for ten days - though hemay not have offered one complete prayers - to go to a place which is less than ٤ farsakh away and to return, and to stay again at his first place for ten days or less thanthat he should offer complete prayer from the time he goes till the time he returns and after his return. However, if his return to the place of his stay is only for thereason that it is located on the way of his journey and his journey is a legal journey (i.e. ٨ farsakh) it is necessary for him to offer shortened prayers at the time of hisreturn.
١٣٥٩. If a traveller who has determined to stay at a place for ten days, wishes, after offering an obligatory prayers (i.e. prayers of the same day) of four units, to go toanother place which is less than ٨ farsakh away and to stay there for ten days, he should offer complete prayers while going and at the place where he intends staying for tendays. However, if the place where he wants to go is ٨ farsakh or more, he should shorten his prayers while going and if he does not want to stay there for ten days he shouldalso shorten his prayers during the period he stays there.
١٣٦٠. If a traveller, who has determined to stay at a place for ten days, wishes, after offering an obligatory prayers (i.e. of the same day) of four units, to goto a place, which is less than ٤ farsakh away, and is uncertain whether or not he should return