وَيَسْتَعْجِلُونَكَ بِالسَّيِّئَةِ قَبْلَ الْحَسَنَةِ وَقَدْ خَلَتْ مِن قَبْلِهِمُ الْمَثُلَاتُ ۗ وَإِنَّ رَبَّكَ لَذُو مَغْفِرَةٍ لِّلنَّاسِ عَلَىٰ ظُلْمِهِمْ ۖ وَإِنَّ رَبَّكَ لَشَدِيدُ الْعِقَابِ (6)
(13:6) hey demand from you the hastening of evil rather than good, *14 though indeed there have been instances of exemplary punishments before them (of the wrath of God on the people who adopted the same attitude.) The fact is that your Lord shows forbearance to the people despite their transgressions, and it is also the fact that your Lord is stern in retribution.
*14) This refers to the demand of the Quraish from the Holy Prophet "If you are a true Prophet of God, why don't you hasten to bring that scourge of God on us of which you have been threatening us, when we are flouting and denying you ?" They did this in different ways. Sometimes they would invoke God mockingly and say, "O Lord, settle our accounts now and do not postpone these to the Day of Resurrection" . At another time, they would say, "Our Lord, if what Muhammad says be true, and be from Thee, then stone us from the sky or send down some other scourge upon us from the sky or send down some other painful torment upon us." In this verse an answer has been given to such impudent demands of the disbelievers. They have been admonished to refrain from such foolish demands and avail of the respite that was being given to them and mend their ways, for they were incurring the wrath of God by adopting the attitude of rebellion.