مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ١٥٨ - ORDERS REGARDMG TAYAMMUM

doubt is about the wiping of the left hand, it is necessary for him to wipe it except when he hasdone something which needs purity, or when continuity has been broken.
٧٢٢. A person whose obligation is tayammum cannot perform it for prayers unless the time for prayers sets in. However, if he performs tayammum for some otherobligatory or recommended act and his excuse (on account of which his religious obligation is tayammum) continues till the time for prayers sets in, he can offer his prayerswith that tayammum.
٧٢٣. If a person whose legal obligations is tayammum knows that his excuse will continue till the end of the time prescribed for prayers, he can offer prayers withtayammum during the early part of the time. However, if he knows that his excuse will cease to exist by the end of the time he should wait and offer prayers with ablutions orbath as the case may be. Further- more, if he hopes that his excuse will be removed the obligatory precaution is that he should wait and offer prayers with ablutions or bathor should offer it with tayammum if too little time is left.
٧٢٤. If a person, who cannot perform ablutions or take bath, is sure, or considers it probable, that his excuse will not be removed, he can offer the qaza of hispast lapsed prayers with tayammum. However, if his excuse if removed afterwards he should offer those prayers again with ablutions or bath.
٧٢٥. It is permissible for a person, who cannot take a ceremonial bath, or perform ablutions, to offer with tayammum the daily recommended prayers for which thetime is fixed. However, if there is a probability that his excuse will cease to exist before the time for prayers is over (and he will be able to perform prayers afterbathing or performing ablutions) it is better that he should not offer the daily recommended prayers during the earlier part of that time.
٧٢٦. If a person who takes jabira bath and performs tayammum