It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When Allah afflicts a Muslim with a bodily illness, then as long as he remains ill, he is given the reward of those deeds which he used to do when he was healthy. Then, if Allah grants him well-being, He gives him the ability to do good deeds before his death, and if He causes him to die, He forgives him." In another narration it is stated: "If He grants him recovery, He gives him the ability to do good deeds before his death."

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that fever came to the service of the Prophet (peace and blessings of Allah be upon him) and said: "Send me to those people with whom you have the closest connection." The Prophet (peace and blessings of Allah be upon him) sent it to the Ansar. Fever remained with them for six days and six nights. This hardship was very burdensome for them, so the Prophet (peace and blessings of Allah be upon him) went to their homes. They complained to the Prophet (peace and blessings of Allah be upon him), so he went from house to house and prayed for their well-being. When the Prophet (peace and blessings of Allah be upon him) returned, one of their women followed him and said: "By the One Who has sent you with the truth! Surely, I am also from the Ansar. My father is also an Ansari, so pray for me as you prayed for the Ansar." The Prophet (peace and blessings of Allah be upon him) said: "What do you want? If you wish, I will pray to Allah Almighty to grant you well-being, and if you wish, be patient and Paradise is for you." She said: "Rather, I will be patient and I will not put my entry into Paradise at risk."

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that no illness is more beloved to me than fever, because it enters every joint of the body, and Allah Almighty grants reward to every limb for its share.

It is narrated from Sayyiduna Abu Nahilah (may Allah be pleased with him), he was requested: Pray (for us). He supplicated thus: O Allah, lessen the illness but do not decrease the reward. It was requested of him: Pray more. He said: O Allah! Include me among Your close servants and join my mother with the maidens of Paradise (Hoor al-‘Ayn).

It is narrated from Ata bin Abi Rabah (may Allah have mercy on him) that Sayyiduna Ibn Abbas (may Allah be pleased with them both) said to me: "Shall I show you a woman of Paradise?" I said: "Why not." Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: "This black woman came to the Prophet (peace and blessings of Allah be upon him) and said: 'I have fits of epilepsy and I become uncovered, so please pray to Allah for me.' The Prophet (peace and blessings of Allah be upon him) said: 'If you wish, be patient and Paradise will be yours, and if you wish, I will pray to Allah to grant you well-being.' She said: 'I will be patient,' then she said: 'But I become uncovered, so please pray to Allah that I do not become uncovered.' So the Prophet (peace and blessings of Allah be upon him) prayed for her."

It is narrated from Ibn Jurayj (may Allah have mercy on him) that ‘Ata bin Abi Rabah (may Allah have mercy on him) informed me that he saw Sayyida Umm Zafar (may Allah be pleased with her) on the steps of the Ka‘bah; she was tall and her complexion was dark. It is narrated from Sayyida ‘A’ishah (may Allah be pleased with her) that the Prophet (peace and blessings of Allah be upon him) used to say:“If a believer is pricked by a thorn or suffers anything less than that, it becomes an expiation for his sins.”

Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Whenever any Muslim is pricked by a thorn in this world and he hopes for reward for it, then on the Day of Resurrection, because of it, surely there will be a reduction in his sins."

It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that I heard the Prophet (peace and blessings of Allah be upon him) say: "When any believing man or woman, or likewise any Muslim man or woman, is afflicted with any illness, Allah Almighty certainly reduces his or her sins through it."

Sayyiduna Urwah (may Allah have mercy on him) says that I and Sayyiduna Abdullah bin Zubair (may Allah be pleased with them both) went to serve Sayyidah Asma (may Allah be pleased with her). This was ten days before the killing of Sayyiduna Abdullah (may Allah be pleased with him). Sayyidah Asma (may Allah be pleased with her) was ill. Sayyiduna Abdullah bin Zubair (may Allah be pleased with them both) asked: How is your health? She replied: I am in pain. Sayyiduna Abdullah bin Zubair (may Allah be pleased with them both) said: I am also in the state of death. Sayyidah Asma (may Allah be pleased with her) said: Perhaps you desire my death, that is why you wish for it. Do not do so. By Allah, I do not wish for death until the matter is decided one way or the other: either you are killed and I am patient over it and seek reward from Allah Almighty, or you are successful and my eyes are cooled. Beware that you are not faced with a situation which you do not agree with, and you accept it out of fear of death. The intention of Sayyiduna Abdullah bin Zubair (may Allah be pleased with them both) was that his mother should pass away first, so that if he were killed, she would not grieve over it.

It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that he came to the service of the Messenger of Allah (peace and blessings of Allah be upon him) while he (the Prophet) had a fever and was wrapped in a sheet. He (Abu Sa'id) placed his hand over the sheet on the Prophet (peace be upon him) and felt the heat even through the sheet. He said: O Messenger of Allah! How severe is your fever! The Messenger of Allah (peace be upon him) said:“Trials are made severe for us in this way, and the reward for us is also doubled.”He (Abu Sa'id) asked: O Messenger of Allah! Upon whom are the most severe trials sent? The Prophet (peace be upon him) said:“Upon the Prophets, then the righteous people. Among them, some are tested with such poverty that they have nothing except a single cloak, which they tear and wear. And they are tested with lice and fleas until they kill them. They are as happy with trials as you are with gifts.”