Is any one of you incapable of reciting a third of the Qur'an in a night? They (the Companions) asked: How could one recite a third of the Qur'an (in a night)? Upon this he (the Holy Prophet) said: "'Say: He is Allah, One' (Qur'an. cxii) is equivalent to a third of the Qur'an."  

عَنِ النَّبِيِّ ﷺ قَالَ أَيَعْجِزُ أَحَدُكُمْ أَنْ يَقْرَأَ فِي لَيْلَةٍ ثُلُثَ الْقُرْآنِ قَالُوا وَكَيْفَ يَقْرَأْ ثُلُثَ الْقُرْآنِ ؟ قَالَ قُلْ هُوَ اللَّهُ أَحَدٌ تَعْدِلُ ثُلُثَ الْقُرْآنِ  

He (the Messenger of Allah) said: Allah divided the Qur'an into three parts, and he made:" Say: He, Allah is One." one part out of the (three) parts of the Qur'an.  

عَنْ قَتَادَةَ بِهَذَا الإِسْنَادِ وَفِي حَدِيثِهِمَا مِنْ قَوْلِ النَّبِيِّ ﷺ قَالَ إِنَّ اللَّهَ جَزَّأَ الْقُرْآنَ ثَلاَثَةَ أَجْزَاءٍ فَجَعَلَ قُلْ هُوَ اللَّهُ أَحَدٌ جُزْءًا مِنْ أَجْزَاءِ الْقُرْآنِ  

Get together. for I am going to recite one-third of the Qur'an before you. And those who could get together gathered there. Then the Messenger of Allah ﷺ came out and recited:" Say: He, Allah, is One." He then entered (his house). Some of us said to the others: Perhaps there has been some news from the heaven on account of which he has gone Inside (the house). The Apostle of Allah ﷺ again came out and said: I told you that I was going to recite one-third of the Qur'in; keep in mind, this (Surah Ikhlas) is equivalent to one-third of the Qur'an.  

قَالَ رَسُولُ اللَّهِ ﷺ احْشِدُوا فَإِنِّي سَأَقْرَأُ عَلَيْكُمْ ثُلُثَ الْقُرْآنِ فَحَشَدَ مَنْ حَشَدَ ثُمَّ خَرَجَ نَبِيُّ اللَّهِ ﷺ فَقَرَأَ { قُلْ هُوَ اللَّهُ أَحَدٌ} ثُمَّ دَخَلَ فَقَالَ بَعْضُنَا لِبَعْضٍ إِنِّي أُرَى هَذَا خَبَرٌ جَاءَهُ مِنَ السَّمَاءِ فَذَاكَ الَّذِي أَدْخَلَهُ ثُمَّ خَرَجَ نَبِيُّ اللَّهِ ﷺ فَقَالَ إِنِّي قُلْتُ لَكُمْ سَأَقْرَأُ عَلَيْكُمْ ثُلُثَ الْقُرْآنِ أَلاَ إِنَّهَا تَعْدِلُ ثُلُثَ الْقُرْآنِ  

The Messenger of Allah ﷺ came out to us and said: I am going to recite before you one-third of the Qur'an. He (the Holy Prophet) then recited:" Say: He is Allah, One--Allah, the Eternal," to the end of the Surah.  

خَرَجَ إِلَيْنَا رَسُولُ اللَّهِ ﷺ فَقَالَ أَقْرَأُ عَلَيْكُمْ ثُلُثَ الْقُرْآنِ فَقَرَأَ { قُلْ هُوَ اللَّهُ أَحَدٌ * اللَّهُ الصَّمَدُ} حَتَّى خَتَمَهَا  

The Messenger of Allah ﷺ sent a man in charge of an expedition and he would recite for his Companions during their prayer, ending (recitation) with:" Say, He is God, One." When they returned mention was made of it to the Messenger of Allah ﷺ. He (the Holy Prophet) told them to ask him why he had done like that. So they asked him and he said: Verily, it is an attribute of the Compassionate One, and (for this reason) I love to recite it. The Messenger of Allah ﷺ thereupon said: Inform him that Allah loves him.  

عَنْ أُمِّهِ عَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ وَكَانَتْ فِي حَجْرِ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ عَنْ عَائِشَةَ أَنَّ رَسُولَ اللَّهِ ﷺ بَعَثَ رَجُلاً عَلَى سَرِيَّةٍ وَكَانَ يَقْرَأُ لأَصْحَابِهِ فِي صَلاَتِهِمْ فَيَخْتِمُ بِ { قُلْ هُوَ اللَّهُ أَحَدٌ} فَلَمَّا رَجَعُوا ذُكِرَ ذَلِكَ لِرَسُولِ اللَّهِ ﷺ فَقَالَ سَلُوهُ لأَىِّ شَىْءٍ يَصْنَعُ ذَلِكَ فَسَأَلُوهُ فَقَالَ لأَنَّهَا صِفَةُ الرَّحْمَنِ فَأَنَا أُحِبُّ أَنْ أَقْرَأَ بِهَا فَقَالَ رَسُولُ اللَّهِ ﷺ أَخْبِرُوهُ أَنَّ اللَّهَ يُحِبُّهُ