Is it permissible to pray atop a washing machine without ablution, and if that is not permissible, is it valid to combine the Dhuhr and Asr prayers with Maghrib after finishing the laundry and feeling exhausted?

A patient must perform the prayer at its due time, before or after dialysis if possible, and it is not permissible to delay or advance it from its prescribed time. If dialysis takes up the prayer time, the patient should pray it at the beginning of its time and combine it with the subsequent prayer as an early combination (jam taqdim) if they cannot perform it later. However, if dialysis is before the prayer time or at its very beginning and prevents the patient from praying, they should delay it and pray it as a late combination (jam ta'khir) with the subsequent prayer. If the necessity of dialysis prevents performing the prayer at its due time, causing its time to expire, and it is not possible to combine it, then it is permissible to delay it and make it up after dialysis due to necessity, based on the Almighty's saying: "So fear Allah as much as you are able," and "Allah does not burden a soul beyond its capacity."