It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "When one of you visits a sick person, he should say: 'Allahumma-shfi 'abdak, yanka'u laka 'aduwwan aw yamshi laka ila salah' (O Allah, cure this servant of Yours, so that he may wound an enemy for Your sake (i.e. fight in jihad) or walk to prayer for Your pleasure)." This hadith is sahih (authentic) on the condition of Muslim, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, a servant has a high rank with Allah which he cannot attain through his deeds alone, so Allah Almighty continues to afflict him with things he dislikes (hardships) until He brings him to that rank." This hadith has an authentic chain (sahih al-isnad), but the two Shaykhs did not record it.

It is narrated from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When the time of death drew near for Adam (peace be upon him), he said to his sons: O my sons! Go and pick some of the fruits of Paradise for me." He (peace and blessings be upon him) said: "So his sons set out, and on the way the angels met them. The angels asked: O sons of Adam! Where are you heading? They said: Our father has sent us to pick some of the fruits of Paradise for him. The angels said: Go back, for your task has been taken care of." He (peace and blessings be upon him) said: "So they returned with them until they entered upon Adam (peace be upon him). When Hawwa' (peace be upon her) saw them, she was frightened and began drawing close to Adam (peace be upon him) and clinging to him. At this Adam (peace be upon him) said to her: Keep away from me, move away from me; it was because of you that I was put (to trial). Get out from between me and the angels of my Lord." He (peace and blessings be upon him) said: "So the angels took his soul, then they washed him, applied perfume to him, and shrouded him." He (peace and blessings be upon him) said: "Then the angels offered the funeral prayer over him, dug a grave for him, and buried him. Then the angels said: O sons of Adam! This is your practice (sunnah) regarding your dead, so do likewise." This hadith has an authentic chain (sahih al-isnad), but the two Shaykhs did not record it. It is of the type in which only a single narrator is found reporting from the Tabi'i, for no one other than al-Hasan al-Basri narrates from Utayy bin Damrah al-Sa'di. In my view, the two Shaykhs identified another hidden defect ('illah) in it, namely that this narration is also reported from al-Hasan al-Basri without mention of Utayy:

It is narrated from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Adam (peace be upon him) was a tall man." Then the narrator mentioned a long hadith, and at its end he stated that Adam (peace be upon him) said: "Get out from between me and the messengers (angels) of my Lord, for it is because of you that this (trial) came upon me. Then the angels took his soul, washed him three times with water and lote-tree leaves, shrouded him, prayed over him, and buried him. Then the angels said: This is the practice (sunnah) of your children after you." This narration does not constitute a defect ('illah) in the hadith of Yunus bin Ubayd, because he knew the hadith of al-Hasan al-Basri better than the people of Madinah and Egypt. And Allah knows best.

Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) visited a sick man who was suffering from the heat of fever, and Abu Hurayrah was with him (peace and blessings be upon him). The Prophet (peace and blessings be upon him) said: "Rejoice, for Allah Almighty says: 'It is My fire which I impose upon My believing servant in this world, so that it becomes (a substitute for) his share of the Fire in the Hereafter.'" This hadith has an authentic chain (sahih al-isnad), but the two Shaykhs did not record it.

Sayyidah Aishah (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings be upon him) was struck by severe pain, and he (peace and blessings be upon him) began tossing and turning restlessly on his bed. I said: O Messenger of Allah! If one of us had done this, you would have shown displeasure with him. The Messenger of Allah (peace and blessings be upon him) said: "Indeed, the believer is subjected to hardship, and there is no believer who is struck by a calamity or a pain except that Allah removes a sin from him in return for it and raises his rank." This hadith is sahih (authentic) on the condition of the two Shaykhs, but they did not record it.

It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) visited a woman of the Ansar and asked her: "Is it Umm Mildam (fever)?" She said: Yes, may Allah curse it. The Messenger of Allah (peace and blessings be upon him) said: "Do not revile it, for it washes away the sins of the servant just as the furnace removes the impurities of iron." This hadith is sahih (authentic) on the condition of Muslim, but the two Shaykhs did not record it with these words; Imam Muslim recorded it with different wording through the narration of Hajjaj bin Abi Uthman from Abu al-Zubayr.

Sayyiduna Jabir (may Allah be pleased with him) narrates that fever came to the Prophet (peace and blessings be upon him) and asked permission to enter. He (peace and blessings be upon him) asked: "Who are you?" It said: I am Umm Mildam (fever). He (peace and blessings be upon him) asked: "Would you like to be sent to the people of Quba'?" It said: Yes. So it went to them and they caught fever, which caused them severe hardship. They complained of it to him (peace and blessings be upon him) and said: O Messenger of Allah! We are in great distress because of the fever. He (peace and blessings be upon him) said: "If you wish, I will supplicate to Allah and He will remove it from you, and if you wish, it will become a means of purification (tahur) for you." They said: "No, rather let it remain a means of purification for us." This hadith is sahih (authentic) on the condition of Muslim, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The believer continues to be tested in his own self, his wealth and his children, until he meets Allah with no sin remaining upon him." This hadith is sahih (authentic) on the condition of Muslim, but they did not record it, and it also has an authentic supporting narration (shahid):

Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates: I heard the Messenger of Allah (peace and blessings be upon him) saying: "The illness and pain that afflict the believer become an expiation for his sins."