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
nasai-kubra:9551 – ʿAmr b. ʿAlī > Muʿādh b. Hishām from my father > Qatādah > Abū ʿUthmān > ʿUmar > Nahānī Nabī Allāh ﷺ

[Machine] Nothing should be worn silk except in the place of two fingers.  

الكبرى للنسائي:٩٥٥١ – أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ قَالَ حَدَّثَنِي أَبِي عَنْ قَتَادَةَ عَنْ أَبِي عُثْمَانَ عَنْ عُمَرَ قَالَ «§نَهَانِي نَبِيُّ اللهِ ﷺ

عَنْ لُبْسِ الْحَرِيرِ إِلَّا مَوْضِعَ إِصْبَعَيْنِ»  

See similar narrations below:

Collected by Muslim, Ibn Ḥibbān
muslim:2069i – ʿUbaydullāh b. ʿUmar al-Qawārīrī And ʾAbū Ghassān al-Mismaʿī Wazuhayr b. Ḥarb Waʾisḥāq b. Ibrāhīm And Muḥammad b. al-Muthanná And Ibn Bashhār > Isḥāq > al-Ākharūn > Muʿādh b. Hishām from my father > Qatādah > ʿĀmir al-Shaʿbī > Sūwayd b. Ghafalah > ʿUmar b. al-Khaṭṭāb Khaṭab Bi-al-Jābiyah > Nahá Nabī Allāh ﷺ

'Umar addressed us at a place known as Jabiya (Syria) and he said: Allah's Apostle ﷺ forbade us the wearing of silk but to the extent of two or three fingers or four fingers.  

مسلم:٢٠٦٩i – حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عُمَرَ الْقَوَارِيرِيُّ وَأَبُو غَسَّانَ الْمِسْمَعِيُّ وَزُهَيْرُ بْنُ حَرْبٍ وَإِسْحَاقُ بْنُ إِبْرَاهِيمَ وَمُحَمَّدُ بْنُ الْمُثَنَّى وَابْنُ بَشَّارٍ قَالَ إِسْحَاقُ أَخْبَرَنَا وَقَالَ الآخَرُونَ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ حَدَّثَنِي أَبِي عَنْ قَتَادَةَ عَنْ عَامِرٍ الشَّعْبِيِّ عَنْ سُوَيْدِ بْنِ غَفَلَةَ أَنَّ عُمَرَ بْنَ الْخَطَّابَ خَطَبَ بِالْجَابِيَةِ فَقَالَ

نَهَى نَبِيُّ اللَّهِ ﷺ عَنْ لُبْسِ الْحَرِيرِ إِلاَّ مَوْضِعَ إِصْبَعَيْنِ أَوْ ثَلاَثٍ أَوْ أَرْبَعٍ  

ذِكْرُ بَعْضِ الْوَقْتِ الَّذِي أُبِيحَ لُبْسُ الْحَرِيرِ لِلرِّجَالِ فِيهِ

ibnhibban:5441 – Aḥmad b. ʿAlī b. al-Muthanná > ʿUbaydullāh b. ʿUmar al-Qawārīrī > Muʿādh b. Hishām from my father > Qatādah > ʿĀmir > Sūwayd b. Ghafalah > ʿUmar b. al-Khaṭṭāb Khaṭab > Nahá Nabī Allāh ﷺ

'Umar addressed us at a place known as Jabiya (Syria) and he said: Allah's Apostle ﷺ forbade us the wearing of silk but to the extent of two or three fingers or four fingers. (Using translation from Muslim 2069i)  

ابن حبّان:٥٤٤١ – أَخْبَرَنَا أَحْمَدُ بْنُ عَلِيِّ بْنِ الْمُثَنَّى قَالَ حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عُمَرَ الْقَوَارِيرِيُّ قَالَ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ قَالَ حَدَّثَنَا أَبِي عَنْ قَتَادَةَ عَنْ عَامِرٍ عَنْ سُوَيْدِ بْنِ غَفَلَةَ أَنَّ عُمَرَ بْنَ الْخَطَّابِ خَطَبَ فَقَالَ

«نَهَى نَبِيُّ اللَّهِ ﷺ عَنْ لُبْسِ الْحَرِيرِ إِلَّا مَوْضِعَ أُصْبُعَيْنِ أَوْ ثَلَاثٍ أَوْ أَرْبَعٍ»