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.
muslim:5Yaḥyá b. Yaḥyá > Hushaym > Sulaymān al-Taymī > Abū ʿUthmān al-Nahdī > ʿUmar b. al-Khaṭṭāb

‘It is enough of a lie for a man that he narrates everything he hears’.  

مسلم:٥وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى أَخْبَرَنَا هُشَيْمٌ عَنْ سُلَيْمَانَ التَّيْمِيِّ عَنْ أَبِي عُثْمَانَ النَّهْدِيِّ قَالَ قَالَ عُمَرُ بْنُ الْخَطَّابِ ؓ

«بِحَسْبِ الْمَرْءِ مِنَ الْكَذِبِ أَنْ يُحَدِّثَ بِكُلِّ مَا سَمِعَ۔»  


See similar narrations below:

Collected by Muslim, Suyūṭī
muslim:i005Muḥammad b. al-Muthanná > ʿAbd al-Raḥman > Sufyān > Abū Isḥāq > Abū al-Aḥwaṣ > ʿAbdullāh

‘It is enough of a lie for a man that he narrates everything he hears’.  

مسلم:i٠٠٥حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ قَالَ حَدَّثَنَا سُفْيَانُ عَنْ أَبِي إِسْحَاقَ عَنْ أَبِي الأَحْوَصِ عَنْ عَبْدِ اللَّهِ قَالَ

بِحَسْبِ الْمَرْءِ مِنَ الْكَذِبِ أَنْ يُحَدِّثَ بِكُلِّ مَا سَمِعَ  

suyuti:2-317bʿUmar > Biḥsb al-Mʾmin Mn al-Kadhib
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السيوطي:٢-٣١٧b

"عَنْ عُمَرَ قَالَ: بِحسْبِ المؤمِن من الكَذِبِ أنْ يُحدِّث بِكُل مَا سَمِع".  

[م] مسلم [هب] البيهقى في شعب الإيمان