Hadith 994 - The Book of the Commencement of the Prayer - Sunan An-Nasa'i - سنن النسائي - Collection of Actions, Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم) - Kutub as-Sittah

11. The Book of the Commencement of the Prayer - كتاب الافتتاح

69) Chapter: The virtue of reciting "Say: He is Allah, (the) One"

It was narrated that Ubaid bin Hunain, the freed slave of the family of Zaib bin Al-Khattab, said: "I heard Abu Hurairah say: 'I came back (from a journey) with the Messenger of Allah (ﷺ) and he heard a man reciting 'Say: He is Allah, (the) One, Allah-us-Samad (the Self-Sufficient Master). He begets not, nor was He begotten. And there is none equal or comparable unto Him.' The Messenger of Allah (ﷺ) said: 'It is guaranteed.' We asked him: 'What, O Messenger of Allah?' He said: 'Paradise.'"

Reference: 994
English reference: Vol. 2, Book 11, Hadith 995
In-book reference: Book 11, Hadith 119
Grade: Hasan (Darussalam)
Read this hadith from Darussalam Collection

69) باب الْفَضْلِ فِي قِرَاءَةِ ‏{‏ قُلْ هُوَ اللَّهُ أَحَدٌ ‏}‏

أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ عُبَيْدِ بْنِ حُنَيْنٍ، مَوْلَى آلِ زَيْدِ بْنِ الْخَطَّابِ قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ، يَقُولُ أَقْبَلْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَسَمِعَ رَجُلاً يَقْرَأُ ‏{‏ قُلْ هُوَ اللَّهُ أَحَدٌ * اللَّهُ الصَّمَدُ * لَمْ يَلِدْ وَلَمْ يُولَدْ * وَلَمْ يَكُنْ لَهُ كُفُوًا أَحَدٌ ‏}‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ وَجَبَتْ ‏"‏ ‏.‏ فَسَأَلْتُهُ مَاذَا يَا رَسُولَ اللَّهِ قَالَ ‏"‏ الْجَنَّةُ ‏"‏ ‏.‏