Qul law shaaa'al laahu maa talawtuhoo 'alaikum wa laaa adraakum bihee faqad labistu feekum 'umuram min qablih; afalaa ta'qiloon
Say: "If Allah had so willed, I should not have rehearsed it to you, nor would He have made it known to you. A whole life-time before this have I tarried amongst you: will ye not then understand?"