مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ١٧٩ - ORDERS REGARDING QIBLA

and one should offer ones prayers facing it. However, if a person is away from it and stands in sucha manner that people say that he is offering his prayers facing the Qibla, it is sufficient. This also applies to other acts which should be performed facing the Qibla (e.g.while slaughtering an animal etc.).
٧٨٥. If a person is offering obligatory prayers while standing, his face, chest and belly should be facing the Qibla and the recommended precaution is that thefingers of his feet should also be facing Qibla.
٧٨٦. If a person offers prayers in the sitting posture it is necessary that at the time of his offering prayers his face, chest and belly are facing the Qibla.
٧٨٧. If a person cannot offer prayers in the sitting posture he should, while offering prayers, lie on the right hand side in such a manner that the front part ofhis body should face the Qibla. And if this is not possible he should lie on the right hand side in such a manner that the front part of his body should face the Qibla. Andif even this is not possible he should lie on his back in such a manner that the soles of his feet should face the Qibla.
٧٨٨. Precautionary prayers and forgotten prostration (Sajdatus sahu) and forgotten tashahud should be offered facing the Qibla and on the basis of recommendedprecaution forgotten prostration should also be offered facing the Qibla.
٧٨٩. A recommended prayers can be offered while one is walking or riding and if a person offers recommended prayers in these two conditions it is not necessary thathe should be facing the Qibla
٧٩٠. A person who wishes to offer prayers should make efforts to locate the direction of the Qibla so that he may become certain about the direction of the Qibla oracquire such information as may amount to certainty. In case, however, he is not in a position to do so he should form an idea about it from the