سورة Al-Imran ( The Famiy of Imran ) - الآية 153

And recall what time ye were running off and would not look back on any one, albeit the apostle In your rear was calling unto you. Wherefore He caused sorrow to overtake you for sorrow. that ye might not grieve for that which ye might lose nor for that which might befall you. And Allah is Aware of that which ye Work.