الجامع المختصر لفضائل الآيات والسور
Virtues of the Qur'an's Chapters and Verses
The love of this sūrah leads to paradise
حُبَّكَ إِيَّاهَا يُدْخِلُكَ الْجَنَّةَ
Virtues of the Qur'an's Chapters and Verses 81
Abu Hurayrah reported:
"I went out with the Messenger of Allah and heard a man reciting Qul Huwa Allahu Ahad [Sūrah Al-Ikhlāṣ] so the Messenger of Allah (ﷺ) said: 'It is obligatory.' I said: 'What is obligatory?' He said: 'Paradise (is obligatory as a reward for the man).'" Reference: Jami` at-Tirmidhi 2897.
عَنْ أَبِي هُرَيْرَةَ، قَالَ أَقْبَلْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَسَمِعَ رَجُلاً يَقْرَأُ ‏(‏قُلْ هُوَ اللَّهُ أَحَدٌ * اللَّهُ الصَّمَدُ ‏)‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ وَجَبَتْ ‏"‏ ‏.‏ قُلْتُ وَمَا وَجَبَتْ قَالَ ‏"‏ الْجَنَّةُ ‏"‏.‏
Reference : Virtues of the Qur'an's Chapters and Verses 81