With regard to a traveller who must perform qaṣr prayers, if his ẓuhr, ʿaṣr, or ʿishāʾ prayers become qaḍāʾ, he must perform them as two rakʿah qaḍāʾ prayers even if he wants to make them up when he is not travelling. If these prayers become qaḍāʾ for someone who is not a traveller, he must perform them as four rakʿah qaḍāʾ prayers even if he wants to make them up when he is travelling.