Ayahs 23:116–117Commentary
The last few verses of this Surah Al-Mu'minun from verse 115 to verse 118 have special merit. Baghawi and Thalabi have related from Sayyidna Ibn Masud ؓ that he came across a person who was very ill. He recited the above verses into the sick man's ears and he was cured immediately. The Holy Prophet ﷺ asked him what he had whispered in the sick man's ears to which Sayyidna 'Abdullah Ibn Masud ؓ replied that he had recited these verses (115 to 118) in his ears. Thereupon the Holy Prophet ﷺ said, "I swear by Him Who has power over my life that if a person with genuine faith were to recite these verses on a mountain, the mountain itself may move from its place". (Qurtubi and Mazhari)
Ayah 23:118رَّبِّ اغْفِرْ وَارْحَمْ (My Lord, forgive and have mercy - 23:118). Here the object of the forgiveness and having mercy has not been mentioned. What is there to be forgiven and to whom is mercy to be shown? And this seems to suggest a general prayer for forgiveness which would include deliverance from harm and suffering, and a general prayer for mercy which would include the grant of every wish. Since protection from bodily harm and acquisition of legitimate gains is the object of all human activity, this prayer covers both these aspects. (Mazhari) And the reason why the Holy Prophet ﷺ was commanded to recite this prayer of forgiveness and mercy, even tough he is impeccable, is to impress upon his followers the special merit of this prayer. (Qurtubi)
Surah Al-Mu'minun began with the verse قَدْ أَفْلَحَ الْمُؤْمِنُونَ (Success is really attained by the believers - 23:1) and ends withإِنَّهُ لَا يُفْلِحُ الْكَافِرُونَ (Surely, the infidels will not achieve success - 23:117) which shows that success will come to believers only and that the unbelievers will have no share of it.