Sunan an-Nasa'i 994
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.'"
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 ﷺ فَسَمِعَ رَجُلاً يَقْرَأُ { قُلْ هُوَ اللَّهُ أَحَدٌ * اللَّهُ الصَّمَدُ * لَمْ يَلِدْ وَلَمْ يُولَدْ * وَلَمْ يَكُنْ لَهُ كُفُوًا أَحَدٌ } فَقَالَ رَسُولُ اللَّهِ ﷺ " وَجَبَتْ " . فَسَأَلْتُهُ مَاذَا يَا رَسُولَ اللَّهِ قَالَ " الْجَنَّةُ " .