أَحَسِبَ ٱلنَّاسُ أَن يُتْرَكُوٓا۟ أَن يَقُولُوٓا۟ ءَامَنَّا وَهُمْ لَا يُفْتَنُونَ
3:180; 9:16.
Commentary:
The preceding Surah ended on the note that the Holy Prophet will come back as victor and conqueror to his native town, Mecca, from where he had been driven out as a friendless fugitive. The present Surah opens with the warning to believers that long, hard work and hardships and privations patiently borne are the sine qua non of success in life. This law applies as much to communities and nations as to individuals. Mere lip-profession of faith is not enough. Individuals and communities have to go through the fire of trials and tribulations to achieve their ends. The greater and harder the sacrifice, the more glorious and enduring the success.
3:180; 9:16.