مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ١٨٦ - CONDITIONS FOR DRESS WORN DURING PRAYERS

is impure but does not know which of them is impure and has sufficient time at his disposal he shouldoffer prayers with each one of them. For example if he wishes to offer midday and afternoon prayers he should offer one midday prayers and one afternoon prayers with each oneof them. However, if the time at his disposal is short he may offer the prayers with any one of them and it will be sufficient.
٨٢٣. The dress which a person uses for offering prayers should be permissible. Hence, if a person knows that it is unlawful to use an usurped dress, or does notknow the rule on account of negligence, and intentionally offers prayers with the usurped dress, his prayers would be void. In case, however, his dress includes those usurpedthings which cannot cover alone the private parts of the body or in case they can cover the private parts, the person offering prayers is not wearing them at that time (forexample a big handkerchief which he is keeping in his pocket) and similarly even if he is wearing the usurped things but he also possesses a permissible covering, in allthese cases the fect that the things in question have been usurped does not affect the validity of the prayers although, as a precautionary measure, their use should beavoided.
٨٢٤. If a person knows that it is unlawful to wear usurped dress but does not know that it makes prayers void, and if he intentionally offers prayers with usurpeddress, his prayers will be void as explained in the foregoing article.
٨٢٥. If a person does not know that his dress is a usurped one or forgets about its being usurped and offers prayers with it, his prayers is in order, provided thathe himself is not the usurper.
٨٢٦. If a person does not know or forgets that his dress is a usurped one, and realizes this during prayers, and if his private parts are covered by another thing and he can take off the usurped dress immediately and without the continuity of