102:5
كَلَّا لَوْ تَعْلَمُونَ عِلْمَ ٱلْيَقِينِ ٥
Saheeh International
No! If you only knew with knowledge of certainty...
Tafsir of "Ibn Kathir" (English)
Nay! If you knew with a sure knowledge.meaning, `if you knew with true knowledge, you would not be diverted by rivalry for wealth away from seeking the abode of the Hereafter until you reach the graves.'Then Allah says,لَتَرَوُنَّ الْجَحِيمَ