Recite Surah Al-Ikhlas daily

أَنَّ رَجُلاً، سَمِعَ رَجُلاً، يَقْرَأُ ‏{‏قُلْ هُوَ اللَّهُ أَحَدٌ‏}‏ يُرَدِّدُهَا فَلَمَّا أَصْبَحَ جَاءَ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَذَكَرَ ذَلِكَ لَهُ وَكَأَنَّ الرَّجُلَ يَتَقَالُّهَا فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ وَالَّذِي نَفْسِي بِيَدِهِ إِنَّهَا لَتَعْدِلُ ثُلُثَ الْقُرْآنِ ‏"‏‏.

“A man heard another man reciting (Surat-Al-Ikhlas) 'Say He is Allah, (the) One.' (112. 1) repeatedly. The next morning he came to Allah's Messenger ﷺ and informed him about it as if he thought that it was not enough to recite. On that Allah's Messenger ﷺ said, "By Him in Whose Hand my life is, this Surah is equal to one-third of the Qur'an”

أَنَّ رَجُلاً، قَامَ فِي زَمَنِ النَّبِيِّ صلى الله عليه وسلم يَقْرَأُ مِنَ السَّحَرِ ‏{‏قُلْ هُوَ اللَّهُ أَحَدٌ‏}‏ لاَ يَزِيدُ عَلَيْهَا، فَلَمَّا أَصْبَحْنَا أَتَى رَجُلٌ النَّبِيَّ صلى الله عليه وسلم نَحْوَهُ‏.

“My brother, Qatada bin An-Nau'man said, "A man performed the night prayer late at night in the lifetime of the Prophet ﷺ and he read: 'Say: He is Allah, (the) One,' (112.1) and read nothing besides that. The next morning a man went to the Prophet ﷺ ,~ and told him about that . (The Prophet ﷺ replied the same as (in Hadith 532) above”