49الَّذينَ يَخشَونَ رَبَّهُم بِالغَيبِ وَهُم مِنَ السّاعَةِ مُشفِقونَ(Irfan-ul-Quran)(They are) those who fear their Lord unseen and who dread (the calamities of) the Hour (of Rising).