عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ أَوْصَى سَلْمَانَ الْخَيْرَ قَالَ إِنَّ نَبِيَّ اللَّهِ عَلَيْهِ السَّلَامُ يُرِيدُ أَنْ يَمْنَحَكَ كَلِمَاتٍ تَسْأَلُهُنَّ الرَّحْمَنَ تَرْغَبُ إِلَيْهِ فِيهِنَّ وَتَدْعُو بِهِنَّ بِاللَّيْلِ وَالنَّهَارِ قُلْ اللَّهُمَّ إِنِّي أَسْأَلُكَ صِحَّةَ إِيمَانٍ وَإِيمَانًا فِي خُلُقٍ حَسَنٍ وَنَجَاحًا يَتْبَعُهُ فَلَاحٌ يَعْنِي وَرَحْمَةً مِنْكَ وَعَافِيَةً وَمَغْفِرَةً مِنْكَ وَرِضْوَانًا
It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) gave this advice to Sayyiduna Salman Khair (may Allah be pleased with him): Verily, the Prophet of Allah wants to grant you a few words, through which you will ask the Most Merciful, through which you will express your desire towards Him, and you will recite them day and night. Say: O Allah! I ask You for the health of faith, and faith with good character, and success that is followed by prosperity, that is, and mercy from You, and well-being, and forgiveness from You, and Your pleasure. (O Allah! I ask You for perfect faith, faith with good character, and the fulfillment of a successful purpose. I ask You for mercy, well-being, forgiveness, and Your pleasure.)