Hadith 5:12
Abu Huraira said that when the Prophet stated that his people would be granted forgiveness on the last night in Ramadan and was asked whether it was Lailat al-qadr , he replied, “No, but a workman is paid his full wages only when he has finished his work.” Ahmad transmitted it.
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ قَالَ: «يُغْفَرُ لِأُمَّتِهِ فِي آخِرِ لَيْلَةٍ فِي رَمَضَانَ» . قِيلَ: يَا رَسُولَ اللَّهِ أَهِيَ لَيْلَةُ الْقَدْرِ؟ قَالَ: «لَا وَلَكِنَّ الْعَامِلَ إِنَّمَا يُوَفَّى أجره إِذا قضى عمله» . رَوَاهُ أَحْمد
Original Reference: Mishkat al-Masabih 1968