وَإِنَّهُۥ لَقَسَمٌ لَّوْ تَعْلَمُونَ عَظِيمٌ
Saheeh International(76) And indeed, it is an oath - if you could know - [most] great.
English Translation - Rowwad Translation Centerand this is indeed a great oath, if only you knew –
English Translation - Hilali and Khan76. And verily that is indeed a great oath, if you but know.