The Outcome of Gratitude and Ingratitude

In the third verse (7), it was said: وَإِذْ تَأَذَّنَ رَ‌بُّكُمْ لَئِن شَكَرْ‌تُمْ لَأَزِيدَنَّكُمْ ۖ وَلَئِن كَفَرْ‌تُمْ إِنَّ عَذَابِي لَشَدِيدٌ (And when your Lord declared, "If you express gratitude, I shall certainly give you more, and if you are ungrateful, then My punishment is severe." ). The word: تَأَذَّنَ (ta'adhdhana) is used in the sense of making known or announcing. The sense of the verse is that Allah Ta’ ala has announced it for all to hear: 'If you are thankful for My blessings and do not waste them in acts of disobedience to Me and in deeds which have been prohibited, and try your best to mould your deeds to suit My pleasure, then, I shall increase these blessings for you.' This increase could be in the amount and volume of blessings, or it could be in their continuity and permanence as well. The Holy Prophet وَأَنذِرْ‌ عَشِيرَ‌تَكَ الْأَقْرَ‌بِينَ said: 'A person who is blessed with the Taufiq to be grateful shall never be deprived of barakah and increase in blessings.' (Reported by Ibn Marduwayh from Ibn ` Abbas ؓ - Mazhari)

And then it was said: If you are ungrateful for My blessings then severe is My punishment too. The sum total of ungratefulness is that one spends out the blessings given by Allah Ta` ala in acts disobedient to Him and in things and ways which are impermissible; or, that one is tardy in fulfilling what has been made obligatory on him or her. As for the severe punishment against ungratefulness for blessings in the present world, it is possible that these blessings may be taken back all of a sudden; or, one may fall into some unwelcome circumstances as a result of which he remains unable to make use of that blessing, and finds punishment waiting for him in the Hereafter as well.

It is worth remembering at this point that in this verse, Allah Tad does promise good return, reward and increase in blessing, and that too in an emphatic manner: لَازِیدَنَّکُم (I shall certainly give you more). But, in contrast to this, for the ungrateful it was not said: لَاُعُذِّبَںَّکُم (I shall certainly punish you). Instead of that, given here is a limited warning which conveys the sense that 'My punishment too, to whomsoever it reaches, is very severe.' In this particular interpretation, there is a hint that it is not necessary that every ungrateful person has to undergo punishment - the likelihood of forgiveness also exists.