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.
suyuti:23732a
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السيوطي:٢٣٧٣٢a

"مَهْلًا يَا قَوْمُ، بهَذَا هَلَكَتِ الأُمَمُ مِنْ قَبْلِكُمْ، بِاخْتَلافِهِمْ عَلَى أَنْبِيَائِهِمْ وَضَرْبِهِمُ الْكُتُبَ بَعْضَهَا بِبَعْضٍ، إِنَّ الْقُرْآنَ لَمْ يَنْزِلْ يُكَذِّبُ بَعْضُهُ بَعْضًا، بَلْ يُصَدِّقُ بَعْضُهُ بَعْضًا، فَمَا عَرَفْتُمْ فَاعْمَلُوا بِهِ، وَمَا جَهلْتُمْ مِنْهُ فَرُدُّوهُ إِلَى عَالِمِهِ".  

[حم] أحمد عن ابن عمرو

See similar narrations below:

Collected by Aḥmad, Suyūṭī
ahmad:6741ʿAbd al-Razzāq > Maʿmar > al-Zuhrī > ʿAmr b.ishuʿayb from his father from his grandfather

[Machine] The Prophet ﷺ heard a group of people arguing, so he said, "Indeed, those who came before you were destroyed because they used to contradict and dispute with each other about the Book of Allah. However, the Book of Allah was revealed to confirm and support each other. So, do not contradict each other in regards to it. If you know something, then speak about it, and if you do not know, then say, 'I do not know.' So, eat from it and refer to those who have knowledge about it."  

أحمد:٦٧٤١حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنْ الزُّهْرِيِّ عَنْ عَمْرِو بْنِشُعَيْبٍ عَنْ أَبِيهِ عَنْ جَدِّهِ قَالَ

سَمِعَ النَّبِيُّ ﷺ قَوْمًا يَتَدَارَءُونَ فَقَالَ إِنَّمَا هَلَكَ مَنْ كَانَ قَبْلَكُمْ بِهَذَا ضَرَبُوا كِتَابَ اللهِ بَعْضَهُ بِبَعْضٍ وَإِنَّمَا نَزَلَ كِتَابُ اللهِ يُصَدِّقُ بَعْضُهُ بَعْضًا فَلَا تُكَذِّبُوا بَعْضَهُ بِبَعْضٍ فَمَا عَلِمْتُمْ مِنْهُ فَقُولُوا وَمَا جَهِلْتُمْ فَكِلُوهُ إِلَى عَالِمِهِ  

suyuti:7785a
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السيوطي:٧٧٨٥a

"إِنَّمَا هَلَكَ منْ كَانَ قَبْلَكم بِهذا، ضَرَبُوا كِتَابَ اللَّهِ بَعْضَه بِبَعْض وإِنَّما نَزَلَ كتَابُ اللَّهِ يُصَدِّقُ بَعْضُه بَعْضًا، وَلَا يُكَذِّبُ بَعْضُه بَعْضًا. مَا عَلمْتم فيه فَقُولُوا، وَمَا جَهِلتُمْ فَكِلوهُ إِلَى عَالِمِه" .  

[هب] البيهقى في شعب الإيمان عن ابن عمرو ؓ