Evidence for the sick person combining prayers

Question:
What is your evidence for the sick person combining the Zuhr prayer with the 'Asr prayer, and the Maghrib prayer with the 'Isha' prayer?

Answer:
It is mentioned in several hadiths, including the hadith of Ibn 'Abbas, that the Prophet (peace and blessings be upon him) combined prayers in Madinah without fear or rain. In another narration, it says without fear or travel. This indicates that travel, rain, and fear are reasons for combining prayers, so illness is all the more so.
Likewise, the hadith of Humaynah bint Jahsh. It is established in the Sunnah that the Prophet (peace and blessings be upon him) permitted her to combine prayers. She was suffering from severe irregular non-menstrual bleeding, so he ordered her to combine and told her: "It is the better of the two." The scholars said: If irregular non-menstrual bleeding permits combining because it is exhausting and a type of illness, then other illnesses that make prayer difficult, such as fever and the like, are the same. So if one combines, there is nothing wrong with it.