When you received it with your tongues980 and said with your mouths that of which you had no knowledge and thought it was insignificant while it was, in the sight of Allāh, tremendous.
Notes
[980] Rather than your ears, i.e., not thinking about what you had heard but hastening to repeat it carelessly.
Verse 15 of Surah An-Nur (24:15), a Medinan surah, is in juz 18, on page 351 of the mushaf. Read it in Arabic with its transliteration, translations and tafsir, and listen to it recited by 72 reciters.
Listen to verse 15 of Surah An-Nur
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Tafsir of verse 15
Al-Mukhtasar
When you were relating it from one another and passing it to one another through your mouths, despite its falsehood, you had no knowledge. You were thinking that is easy and light, whereas it is grave in the sight of Allah, due to it containing lying and accusing an innocent person.
when you were passing it from one tongue10 to the other, and saying with your mouths what you had no knowledge of, and were taking it lightly, whereas with Allah it was a grave offense.
Notes
[10] Rather than your ears, i.e., not thinking about what you hear but hastening to pass it on to others without verifying it.
When you were propagating it with your tongues, and uttering with your mouths that whereof you had no knowledge, you counted it a little thing, while with Allâh it was very great.
When ye welcomed it with your tongues, and uttered with your mouths that whereof ye had no knowledge, ye counted it a trifle. In the sight of Allah it is very great.
Behold, ye received it on your tongues, and said out of your mouths things of which ye had no knowledge; and ye thought it to be a light matter, while it was most serious in the sight of Allah.
When you received it with your tongues and spoke with your mouths what you had no knowledge of, and you deemed it an easy matter while with Allah it was grievous.
As you received it on your tongues and were saying with your mouths that of which you had no knowledge and reckoned it was a simple thing, and in the Reckoning of Allah it is a tremendous thing.
Here you are - those who have argued about that of which you have [some] knowledge, but why do you argue about that of which you have no knowledge? And Allāh knows, while you know not.