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
darimi:399 – And Qāl

[Machine] Muhammad said, "Look carefully at the source from whom you take this hadith, for it represents your religion."  

الدارمي:٣٩٩ – قَالَ

وَقَالَ مُحَمَّدٌ «انْظُرُوا عَمَّنْ تَأْخُذُونَ هَذَا الْحَدِيثَ فَإِنَّمَا هُوَ دِينُكُمْ»  

See similar narrations below:

Collected by Muslim, Dārimī

Be careful where you get your religion from

muslim:i018 – Ḥasan b. al-Rabīʿ > Ḥammād b. Zayd > Ayyūb And Hishām > Muḥammad > Fuḍayl > Hishām > Makhlad b. Ḥusayn > Hishām > Muḥammad b. Sīrīn

‘Indeed this knowledge is faith, so carefully consider from whom you take your faith’.  

مسلم:i٠١٨ – حَدَّثَنَا حَسَنُ بْنُ الرَّبِيعِ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ عَنْ أَيُّوبَ وَهِشَامٍ عَنْ مُحَمَّدٍ وَحَدَّثَنَا فُضَيْلٌ عَنْ هِشَامٍ قَالَ وَحَدَّثَنَا مَخْلَدُ بْنُ حُسَيْنٍ عَنْ هِشَامٍ عَنْ مُحَمَّدِ بْنِ سِيرِينَ قَالَ

إِنَّ هَذَا الْعِلْمَ دِينٌ فَانْظُرُوا عَمَّنْ تَأْخُذُونَ دِينَكُمْ  

darimi:443 – Aḥmad b. ʿAbdullāh > Zāʾidah > Hishām > Muḥammad

[Machine] "Consider from whom you take this narration, for it is your religion."  

الدارمي:٤٤٣ – أَخْبَرَنَا أَحْمَدُ بْنُ عَبْدِ اللَّهِ حَدَّثَنَا زَائِدَةُ عَنْ هِشَامٍ عَنْ مُحَمَّدٍ قَالَ

«انْظُرُوا عَمَّنْ تَأْخُذُونَ هَذَا الْحَدِيثَ فَإِنَّهُ دِينُكُمْ»