Short answer
Yes. Passing on news, rumours or 'hadith' without checking them is sinful. The Quran tells believers to verify news before acting on it, and the Prophet ﷺ said it is enough of a sin for a person to repeat everything he hears. Sharing a fabricated hadith is even more serious.
Spreading unverified reports that may be false is haram, and spreading what one knows or strongly suspects is false is a lie. Attributing words to the Prophet ﷺ without a sound basis is a major sin.
The four schools agree on this.
Explanation
Allah says: 'O you who believe, if a sinful person brings you news, verify it, lest you harm people out of ignorance and then regret what you did.' When the false story about Aisha spread, Allah rebuked those who passed it from tongue to tongue, thinking it small when with Allah it was enormous. The Prophet ﷺ said it is enough sin for a person to narrate everything he hears.
Online, one tap can spread a lie to thousands. Common examples:
- forwarding 'breaking news' from unknown accounts;
- health claims and miracle cures with no source;
- screenshots that may be edited or taken out of context;
- accusations against people or businesses (see slander);
- chain messages saying 'forward this to ten people or something bad will happen'.
Fake hadith need special care. The Prophet ﷺ said: whoever lies about me on purpose, let him take his seat in the Fire. Many popular messages quote 'hadith' that do not exist, or weak ones presented as certain. Before sharing, check the source: a book name and number you can look up, or a trusted scholar. If you cannot check it, do not share it. Our hadith by topic pages give references you can verify.
A simple test before you forward: Is it true? Is it useful? Is it kind? Would I be happy to answer for it before Allah? If you shared something false, delete it and post a correction where people saw it. The four schools agree on this ruling.
The evidence
Quran, Surah Al-Hujuraat 49:6
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِن جَآءَكُمْ فَاسِقٌۢ بِنَبَإٍۢ فَتَبَيَّنُوٓا۟ أَن تُصِيبُوا۟ قَوْمًۢا بِجَهَٰلَةٍۢ فَتُصْبِحُوا۟ عَلَىٰ مَا فَعَلْتُمْ نَٰدِمِينَ ﴿٦﴾
O you who have believed, if there comes to you a disobedient one with information, investigate, lest you harm a people out of ignorance and become, over what you have done, regretful.
News must be checked before it is believed or passed on.
Quran, Surah An-Noor 24:15
إِذْ تَلَقَّوْنَهُۥ بِأَلْسِنَتِكُمْ وَتَقُولُونَ بِأَفْوَاهِكُم مَّا لَيْسَ لَكُم بِهِۦ عِلْمٌۭ وَتَحْسَبُونَهُۥ هَيِّنًۭا وَهُوَ عِندَ ٱللَّهِ عَظِيمٌۭ ﴿١٥﴾
When you received it with your tongues and said with your mouths that of which you had no knowledge and thought it was insignificant while it was, in the sight of Allah, tremendous.
Passing on what you do not know is a serious sin.
Sunan Abi Dawud 4992
Grading to be checked... كفى بالمرء إثما أن يحدث بكل ما سمع ...
"It is enough sin for a person to narrate everything he hears."
Spreading everything you hear without checking is sinful.
Sahih al-Bukhari 110
Sahih... من كذب علي متعمدا فليتبوأ مقعده من النار ...
"Whoever lies about me deliberately, let him take his seat in the Fire."
Sharing fabricated hadith is a grave sin.
Where the ruling is recorded
- Sharh Sahih Muslim (Nawawi), Introduction, chapter on the prohibition of narrating everything one hears. Explains the warnings against passing on everything heard.
Checked by our team. For a more accurate answer to your own situation, consult a scholar. Quran translation by Sahih International. Hadith Arabic from the standard editions of the six books and the Muwatta, with gradings as recorded there; the English is our own rendering. Spotted a mistake? Tell us.