«أَفَلَا أُعَلِّمُكُمْ شَيْئًا إِذَا فَعَلْتُمُوهُ سَبَقْتُمْ مَنْ بَعْدَكُمْ وَلَا يَكُونُ أَحَدٌ أَفْضَلَ مِنْكُمْ إِلَّا مَنْ فَعَلَ مِثْلَ مَا فَعَلْتُمْ؟ تُسَبِّحُونَ وَتَحْمَدُونَ وَتُكَبِّرُونَ دُبُرَ كُلِّ صَلَاةٍ ثَلَاثًا وَثَلَاثِين»
(Shall I tell you about something that, if you did it, you would catch up with those who have surpassed you and nobody would be better than you except those who would do the same Say, `Subhan Allah, Alhamdulillah and Allahu Akbar,' thirty-three times each after every prayer.) Later, they came back and said, `O Allah's Messenger! Our brethren, the wealthy Muslims, heard of what we did and they also did the same.' The Prophet said,