Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tirmidhi:2143 – Bundār > ʿAbd al-Raḥman b. Mahdī > Sufyān > ʿUmārah b. al-Qaʿqāʿ > Abū Zurʿah b. ʿAmr b. Jarīr > Ṣāḥib Lanā > Ibn Masʿūd

"The Messenger of Allah ﷺ stood among us and said: 'One thing does not infect another.' So a Bedouin said: 'O Messenger of Allah! If a camel gets mangy glands and we leave it at the resting place of camels, then all of the camels get mange?' The Messenger of Allah ﷺ said: 'Who caused the first to get mange? There is no 'Adwa nor safar. Allah created every soul, so he wrote its life, its provision, and its afflictions.'" Note: The majority of scholars interpret this to mean that these things in and of themselves do not transmit or cause harm through supernatural or hidden means but that Allah is ultimately in control and any fearful superstition around these is false.  

الترمذي:٢١٤٣ – حَدَّثَنَا بُنْدَارٌ قال حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ حَدَّثَنَا سُفْيَانُ عَنْ عُمَارَةَ بْنِ الْقَعْقَاعِ حَدَّثَنَا أَبُو زُرْعَةَ بْنُ عَمْرِو بْنِ جَرِيرٍ قَالَ حَدَّثَنَا صَاحِبٌ لَنَا عَنِ ابْنِ مَسْعُودٍ قَالَ

قَامَ فِينَا رَسُولُ اللَّهِ ﷺ فَقَالَ لاَ يُعْدِي شَيْءٌ شَيْئًا فَقَالَ أَعْرَابِيٌّ يَا رَسُولَ اللَّهِ الْبَعِيرُ الْجَرِبُ الْحَشَفَةُ نُدْبِنُهُ فَيُجْرِبُ الإِبِلَ كُلَّهَا فَقَالَ رَسُولُ اللَّهِ ﷺ فَمَنْ أَجْرَبَ الأَوَّلَ لاَ عَدْوَى وَلاَ صَفَرَ خَلَقَ اللَّهُ كُلَّ نَفْسٍ وَكَتَبَ حَيَاتَهَا وَرِزْقَهَا وَمَصَائِبَهَا  

قَالَ أَبُو عِيسَى وَفِي الْبَابِ عَنْ أَبِي هُرَيْرَةَ وَابْنِ عَبَّاسٍ وَأَنَسٍ قَالَ وَسَمِعْتُ مُحَمَّدَ بْنَ عَمْرِو بْنِ صَفْوَانَ الثَّقَفِيَّ الْبَصْرِيَّ قَالَ سَمِعْتُ عَلِيَّ بْنَ الْمَدِينِيِّ يَقُولُ لَوْ حَلَفْتُ بَيْنَ الرُّكْنِ وَالْمَقَامِ لَحَلفْتُ أَنِّي لَمْ أَرَ أَحَدًا أَعْلَمَ مِنْ عَبْدِ الرَّحْمَنِ بْنِ مَهْدِيٍّ

See similar narrations below:

Collected by Aḥmad, Suyūṭī
ahmad:4198 – ʿAbd al-Raḥman > Sufyān > ʿUmārah b. al-Qaʿqāʿ > Abū Zurʿah > Ṣāḥib Lanā > ʿAbdullāh b. Masʿūd

[Machine] The Messenger of Allah صلى الله عليه وسلم stood among us and said, "Nothing happens due to predestined measures, meaning, nothing one does, nor any sickness, nor any relief, nor any loss, except that it has been pre-destined by Allah, and Allah has recorded the measurement of that for every creation. The Bedouin stood up and said, 'O Messenger of Allah! Does taking precautions benefit in anyway against the disease, or is it merely a means of earning livelihood?' The Messenger of Allah صلى الله عليه وسلم replied, 'What has ever been written is decreed and nothing can change it, except du'a (supplication). No sickness shall befall except with Allah's leave. Therefore, seek Allah's protection from it, but do not expose yourself unnecessarily to it."  

أحمد:٤١٩٨ – حَدَّثَنَا عَبْدُ الرَّحْمَنِ حَدَّثَنَا سُفْيَانُ عَنْ عُمَارَةَ بْنِ الْقَعْقَاعِ قَالَ حَدَّثَنَا أَبُو زُرْعَةَ حَدَّثَنَا صَاحِبٌ لَنَا عَنْ عَبْدِ اللهِ بْنِ مَسْعُودٍ قَالَ

قَامَ فِينَا رَسُولُ اللهِ ﷺ فَقَالَ لَا يُعْدِي شَيْءٌ شَيْئًا لَا يُعْدِي شَيْءٌ شَيْئًا لَا يُعْدِي شَيْءٌ شَيْئًا فَقَامَ أَعْرَابِيٌّ فَقَالَ يَا رَسُولَ اللهِ النُّقْبَةُ مِنَ الْجَرَبِ تَكُونُ بِمِشْفَرِ الْبَعِيرِ أَوْ بِذَنَبِهِ فِي الْإِبِلِ الْعَظِيمَةِ فَتَجْرَبُ كُلُّهَا؟ فَقَالَ رَسُولُ اللهِ ﷺ فَمَا أَجْرَبَ الْأَوَّلَ؟ لَا عَدْوَى وَلَا هَامَةَ وَلَا صَفَرَ خَلَقَ اللهُ كُلَّ نَفْسٍ فَكَتَبَ حَيَاتَهَا وَمُصِيبَاتِهَا وَرِزْقَهَا  

suyuti:26354a –
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السيوطي:٢٦٣٥٤a –

"لا يُعْدى شَيء شَيئًا، فَمنْ أجْرَبَ الأوَّلَ؟ لا عَدْوَى، وَلا صَفَر، خَلقَ اللهُ كُلَّ نَفسٍ فَكَتَبَ حَيَاتَهَا وَرِزْقَهَا وَمَصَائِبَهَا".  

[حم] أحمد [ت] الترمذي عن ابن مسعود
suyuti:651-463b – Abay Hurayrah > Jāʾ
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السيوطي:٦٥١-٤٦٣b –

"عَنْ أَبَي هُرَيْرَةَ قَالَ: جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ ﷺ فَقَالَ: يَا رَسُولَ الله! النُّقْبْةُ (*) تكُونُ بمشفر الْبَعِيرِ أَوْ بِعَجْبِهِ فَتَشْمَلُ الإِبِلَ كُلَّهَا جَرَبًا، فَقَالَ رَسُولُ اللهِ ﷺ : فَمَا أَعْدَى الأَوَّلَ، لا عَدْوُى، ولا هَامَةَ، وَلاَ صَفَرَ، خَلَقَ الله كُلَّ نَفْسٍ فَكَتَبَ حَيَاتَها ومُصيَباتِها، وَرِزْقَهَا".  

ابن جرير