He who uttered:" There is no god but Allah, the One, having no partner with Him, His is the Sovereignty and all praise is due to Him and He is Potent over everything" ten times, he is like one who emancipated four slaves from the progeny of Isma'il. Rabi' b. Khuthaim narrated a hadith like this. Sha'bi reported: I said to Rabi': From whom did you hear it? He said: From 'Amr b. Maimun. I came to 'Amr b. Maimun and said to him: From whom did you hear this hadith? He said: from Ibn Abi Laila. I came to Ibn Abi Laila and said to him: From whom did you hear this hadith? He said: From Abu Ayyub Ansari, who narrated from Messenger of Allah ﷺ. (Using translation from Muslim 2693)
لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ عَشْرَ مِرَّارٍ كَانَ كَمَنْ أَعْتَقَ أَرْبَعَ رِقَابٍ مِنْ وَلَدِ إِسْمَاعِيلَ حَدَّثَنَا رَوْحٌ حَدَّثَنَا عُمَرُ بْنُ أَبِي زَائِدَةَ حَدَّثَنَا عَبْدُ اللهِ بْنُ أَبِي السَّفَرِ عَنِ الشَّعْبِيِّ عَنْ رَبِيعِ بْنِ خُثَيْمٍ بِمِثْلِ ذَلِكَ قَالَ فَقُلْتُ لِلَّربِيعِ مِمَّنْ سَمِعْتَهُ؟ فَقَالَ مِنْ عَمْرِو بْنِ مَيْمُونٍ فَقُلْتُ لِعَمْرِو بْنِ مَيْمُونٍ مِمَّنْ سَمِعْتَهُ؟ فَقَالَ مِنْ ابْنِ أَبِي لَيْلَى فَقُلْتُ لِابْنِ أَبِي لَيْلَى مِمَّنْ سَمِعْتَهُ؟ قَالَ مِنْ أَبِي أَيُّوبَ الْأَنْصَارِيِّ يُحَدِّثُهُ عَنِ النَّبِيِّ ﷺ