102 : 4
ثُمَّ كَلَّا سَوۡفَ تَعۡلَمُونَ
Then, no! You are going to know.
Ayah 4 of التَّكاثُر (102 : 4). This page carries the verse in the Uthmani script with a translation of its meaning, at a stable URL that can be cited on its own.
ثُمَّ كَلَّا سَوۡفَ تَعۡلَمُونَ
Then, no! You are going to know.