What was narrated concerning the six Rak’ah after the Maghrib

It was narrated from Abu Hurairah that the Prophet ﷺ said:
“Whoever prays six Rak’ah after the Maghrib and does not say anything bad in between them, will have a reward equal to the worship of twelve years.”

حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا أَبُو الْحُسَيْنِ الْعُكْلِيُّ، أَخْبَرَنِي عُمَرُ بْنُ أَبِي خَثْعَمٍ الْيَمَامِيُّ، أَنْبَأَنَا يَحْيَى بْنُ أَبِي كَثِيرٍ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ ﷺ قَالَ " مَنْ صَلَّى بَعْدَ الْمَغْرِبِ سِتَّ رَكَعَاتٍ لَمْ يَتَكَلَّمْ بَيْنَهُنَّ بِسُوءٍ عُدِلْنَ لَهُ بِعِبَادَةِ ثِنْتَىْ عَشْرَةَ سَنَةً " .