They have no knowledge of it, nor had their fathers. Grave is the word that comes out of their mouths; they speak not except a lie.
English Transliteration
Ma lahum bihi min AAilmin wala liabaihim kaburat kalimatan takhruju min afwahihim in yaqooloona illa kathiban
Tafsir of Verse 5
they have no knowledge of it, they nor their fathers; a monstrous word it is, issuing out of their mouths; they say nothing but a lie.
No knowledge have they of such a thing, nor had their fathers. It is a grievous thing that issues from their mouths as a saying what they say is nothing but falsehood!