Answered by Shaykh Amjad Rasheed
Translated by Ustadha Shazia Ahmad
If the place of wudu is crowded and one fears that waiting for it the crowd to clear up will cause the prayer time to expire, is it permissible to perform tayammum?
If one is unable to perform their ablution because of an over-crowded area and he knows that his turn will not come until the prayer time has expired, then it is obligatory for him to perform tayammum and pray with that. He need not repeat the prayer as Ibn Qasim said on the authority of Ramli. See al-Shirwani (1/326).
الجواب: إذا انحصر إمكان الوضوء من هذا المكان المزدحم عليه الناس فلم يمكن الشخص الوضوء من غيره، وعلم أن نوبته – أي: دوره – لا يأتي إلا خارج الوقت وجب التيمم ويصلي به ولا إعادة عليه كما نقله ابن قاسم عن الرملي، وانظر: الشرواني (1/326).