[Machine] Whoever performs ablution and perfects their ablution, then prays the evening prayer, followed by four units of prayer, completes the bowing and prostration in them, and learns what is recited in them, will be rewarded as if they have observed the Night of Decree. Al-Bukhari indicated this in his Tarikh (history) and he and others used it as evidence that his hadith about the reward of observing the Night of Decree is disconnected in relation to the eight-unit prayer.
مَنْ تَوَضَّأَ فَأَحْسَنَ الْوُضُوءَ ثُمَّ صَلَّى الْعِشَاءَ الْآخِرَةَ وَصَلَّى بَعْدَهَا أَرْبَعَ رَكَعَاتٍ فَأَتَمَّ رُكُوعَهُنَّ وَسُجُودَهُنَّ وَتَعَلَّمَ مَا يَقْتَرِئُ فِيهِنَّ كُنَّ لَهُ بِمَنْزِلَةِ لَيْلَةِ الْقَدْرِ وَقَدْ أَشَارَ إِلَيْهِ الْبُخَارِيُّ فِي التَّارِيخِ وَاسْتَدَلَّ هُوَ وَغَيْرُهُ بِذَلِكَ عَلَى أَنَّ حَدِيثَهُ فِي ثَمَنِ الْمِجَنِّ مُنْقَطِعٌ