عَنْ أَبِي أَيُّوبَ الْأَنْصَارِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مَنْ قَالَ إِذَا صَلَّى الصُّبْحَ لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ عَشْرَ مَرَّاتٍ كُنَّ كَعَدْلِ أَرْبَعِ رِقَابٍ وَكُتِبَ لَهُ بِهِنَّ عَشْرُ حَسَنَاتٍ وَمُحِيَ عَنْهُ بِهِنَّ عَشْرُ سَيِّئَاتٍ وَرُفِعَ لَهُ بِهِنَّ عَشْرُ دَرَجَاتٍ وَكُنَّ لَهُ حَرَسًا مِنَ الشَّيْطَانِ حَتَّى يُمْسِيَ وَإِذَا قَالَهَا بَعْدَ الْمَغْرِبِ فَمِثْلُ ذَلِكَ
It is narrated from Sayyiduna Abu Ayyub Ansari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Whoever, after performing the Fajr prayer, recites this supplication ten times: LAA ILAAHA ILLALLAHU WAHDAHU LAA SHAREEKA LAHU, LAHUL-MULKU WA LAHUL-HAMDU WA HUWA ‘ALAA KULLI SHAY’IN QADEER. He will receive the reward equal to freeing four slaves, ten good deeds will be written for him, ten of his sins will be erased, his ten ranks will be elevated, these words will serve as a protection from Satan for him until the evening, and if he recites them ten times after Maghrib, he will attain the same virtue.