A:
If the reality is as the questioner has mentioned that the kidney dialysis begins before the time of Zhuhr, the sick may delay Zhuhr and combine it with ‘Asr at the time of the latter. (Part No. 6; Page No. 370) Like all sick people, he is allowed to combine two Salahs.
However, if the kidney dialysis begins after the coming of the due time of Zhuhr and ends after the prescribed time of ‘Asr, it is permissible for the sick to combine Zhuhr and ‘Asr Prayers at the time of the earlier one. The same is true with Maghrib and ‘Isha’ Prayers. If the kidney dialysis begins before the time of Maghrib begins, he may delay it and combine it with ‘Isha’ at the time of the later one. If it begins after the beginning of the due time of Maghrib and ends after the time of ‘Isha’ begins, combining the two Salahs is not necessary, as ‘Isha’ has an extended time. However, there is nothing wrong with combining them at the time of Maghrib, as is permissible for all other patients who need this. May Allah cure all sick people!May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.