It is narrated by Abdullah bin Amr that Prophet (ﷺ) said, "When a person falls ill then the reward of those deeds is also recorded for him which he used to perform when he was healthy.  

عَنِ النَّبِيِّ ﷺ قَالَ مَا مِنْ أَحَدٍ يَمْرَضُ إِلاَّ كُتِبَ لَهُ مِثْلُ مَا كَانَ يَعْمَلُ وَهُوَ صَحِيحٌ  

Anas bin Maalik has reported that the Prophet (ﷺ) said, "When Allah involves a Muslim in bodily [pain then he is credited with a reward for those deeds which he was used to do when he was healthy as long as he is ill. Thus, if Allah gives him healing, He washes him (clean of sins). But, if he causes him to die then he forgives him.  

عَنِ النَّبِيِّ ﷺ قَالَ مَا مِنْ مُسْلِمٍ ابْتَلاَهُ اللَّهُ فِي جَسَدِهِ إِلاَّ كُتِبَ لَهُ مَا كَانَ يَعْمَلُ فِي صِحَّتِهِ مَا كَانَ مَرِيضًا فَإِنْ عَافَاهُ أُرَاهُ قَالَ عَسَلَهُ وَإِنْ قَبَضَهُ غَفَرَ لَهُ حدثنا موسى قال حدثنا حماد بن سلمة عن ينام عن أني عن النبي ﷺ مثله وزاد (قال فإن شفاه عسله)  

Abu Hurayrah said that fever presented itself before the Holy Prophet (ﷺ). It said to him, ’’Send me to those people with whom you have a very deep connection. The Prophet (ﷺ) sent it to the Ansar. So, fever gripped them for six days and six nights. Their feverish condition became very serious and the Prophet visited them at their homes. Thy complained of fever and the Holy Prophet (ﷺ) went to each house and prayed for their health. When he was returning, one of their women followed behind him and said, "By Him who has sent you with the truth, I am of the Ansar and my father is also one of the Ansar. Just as you have prayed for the Ansar, pray for me too." The Prophet sg asked her, "What is it that you wish? If you wish, I will pray to Allah that he grant you health but if you are patient then paradise is for you." She said, "I will endure (fever) patiently and will not risk (my chance of) admission to paradise."  

عَنْ أَبِي هُرَيْرَةَ قَالَ جَاءَتِ الْحُمَّى إِلَى النَّبِيِّ ﷺ فَقَالَتِ ابْعَثْنِي إِلَى آثَرِ أَهْلِكَ عِنْدَكَ فَبَعَثَهَا إِلَى الأَنْصَارِ فَبَقِيَتْ عَلَيْهِمْ سِتَّةَ أَيَّامٍ وَلَيَالِيهِنَّ فَاشْتَدَّ ذَلِكَ عَلَيْهِمْ فَأَتَاهُمْ فِي دِيَارِهِمْ فَشَكَوْا ذَلِكَ إِلَيْهِ فَجَعَلَ النَّبِيُّ ﷺ يَدْخُلُ دَارًا دَارًا وَبَيْتًا بَيْتًا يَدْعُو لَهُمْ بِالْعَافِيَةِ فَلَمَّا رَجَعَ تَبِعَتْهُ امْرَأَةٌ مِنْهُمْ فَقَالَتْ وَالَّذِي بَعَثَكَ بِالْحَقِّ إِنِّي لِمَنَ الأَنْصَارِ وَإِنَّ أَبِي لِمَنَ الأَنْصَارِ فَادْعُ اللَّهَ لِي كَمَا دَعَوْتَ لِلأَنْصَارِ قَالَ مَا شِئْتِ إِنْ شِئْتِ دَعَوْتُ اللَّهَ أَنْ يُعَافِيَكِ وَإِنْ شِئْتِ صَبَرْتِ وَلَكِ الْجَنَّةُ قَالَتْ بَلْ أَصْبِرُ ولا أَجْعَلُ الْجَنَّةَ خَطَرًا  

Abu Hurayrah said that he did not like any illness more than fever because it went into each of his limbs. And, Allah grants each limb its share of reward.  

عَنْ أَبِي هُرَيْرَةَ قَالَ مَا مِنْ مَرَضٍ يُصِيبُنِي أَحَبَّ إِلَيَّ مِنَ الْحُمَّى لأَنَّهَا تَدْخُلُ فِي كُلِّ عُضْوٍ مِنِّي وَإِنَّ اللَّهَ عَزَّ وَجَلَّ يُعْطِي كُلَّ عُضْوٍ قِسْطَهُ مِنَ الأَجْرِ  

It is reported by Abu wail that someone said to Abu Nuhaylah (when he was ill), "Pray to Allah." So, he made this supplication, "Oh Allah, lessen the illness but do not diminish the reward." He was again asked to supplicate Allah and he said, "O Allah, let me be among the near ones and make my mother among the hoor (maids of Paradise)”.  

عَنْ أَبِي نُحَيْلَةَ قِيلَ لَهُ ادْعُ اللَّهَ قَالَ اللَّهُمَّ انْقُصْ مِنَ الْمَرَضِ وَلاَ تَنْقُصْ مِنَ الأَجْرِ فَقِيلَ لَهُ ادْعُ ادْعُ فَقَالَ اللَّهُمَّ اجْعَلْنِي مِنَ الْمُقَرَّبِينَ وَاجْعَلْ أُمِّي مِنَ الْحُورِ الْعِينِ  

Ata bin Abu Rabah said that Ibn Abbas asked him if he would like him to show him a woman who would go to paradise. So, he said that he would certainly like (him to show him the woman). Ibn Abbas said to him. "This is a black woman who came to the Prophet and said to him, "Messenger of Allah, I am subject to fits and become uncovered, so make a supplication to Allah to cure me, "The Prophet (ﷺ) said to her, "If you endure it patiently, you will be rewarded with paradise, but if you wish I will make a supplication to Allah to cure you." The woman said, ’I shall endure it. But, (when I get fits) I become uncovered, make supplication to Allah that I may not become uncovered. So, he made a supplication for her."  

قَالَ لِيَ ابْنُ عَبَّاسٍ أَلاَ أُرِيكَ امْرَأَةً مِنْ أَهْلِ الْجَنَّةِ؟ قُلْتُ بَلَى قَالَ هَذِهِ الْمَرْأَةُ السَّوْدَاءُ أَتَتِ النَّبِيَّ ﷺ فَقَالَتْ إِنِّي أُصْرَعُ وَإِنِّي أَتَكَشَّفُ فَادْعُ اللَّهَ لِي قَالَ إِنْ شِئْتِ صَبَرْتِ وَلَكِ الْجَنَّةُ وَإِنْ شِئْتِ دَعَوْتُ اللَّهَ أَنْ يُعَافِيَكَ فَقَالَتْ أَصْبِرُ فَقَالَتْ إِنِّي أَتَكَشَّفُ فَادْعُ اللَّهَ لِي أَنْ لا أَتَكَشَّفَ فَدَعَا لَهَا  

It is reported by Ibn Jurayj that Ata said to him, "I saw the woman, Umm Zufar, on the steps of the Kabah. (She was) a black woman, tall in height". Ayeshah, said that the Prophet said, "If a thorn pricks a Believer or he is hurt more than that then that is an expiation for his sins."  

أَنَّهُ رَأَى أُمَّ زُفَرَ تِلْكَ الْمَرْأَةُ طَوِيلَةً سَوْدَاءَ عَلَى سُلَّمِ الْكَعْبَةِ قَالَ وَأَخْبَرَنِي عَبْدُ اللهِ بْنُ أَبِي مُلَيْكَةَ أَنَّ الْقَاسِمَ أَخْبَرَهُ أَنَّ عَائِشَةَ أَخْبَرَتْهُ أَنَّ النَّبِيَّ ﷺ كَانَ يَقُولُ مَا أَصَابَ الْمُؤْمِنَ مِنْ شَوْكَةٍ فَمَا فَوْقَهَا فَهُوَ كَفَّارَةٌ  

Abu Hurayrah reported the Messenger of Allah (ﷺ) as saying, "if a thorn pricks a Muslim in this world and he hopes for the reward against it then Allah forgives him his sins on the day of Resurrection".  

قَالَ رَسُولُ اللهِ ﷺ مَا مِنْ مُسْلِمٍ يُشَاكُ شَوْكَةً فِي الدُّنْيَا يَحْتَسِبُهَا إِلاَّ قُصَّ بِهَا مِنْ خَطَايَاهُ يَوْمَ الْقِيَامَةِ  

It is narrated by Jabir that he heard the Messenger of Allah (ﷺ) say, "If a believing man or a believing woman or a Muslim man or Muslim woman falls ill then Allah, the exalted, forgives them their sins (because of their illness)."  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ مَا مِنْ مُؤْمِنٍ وَلاَ مُؤْمِنَةٍ وَلاَ مُسْلِمٍ وَلاَ مَسْلَمَةٍ يَمْرَضُ مَرَضًا إِلاَّ قَصَّ اللَّهُ بِهِ عَنْهُ مِنْ خَطَايَاهُ