Sunan an-Nasa'i #467 · The Book of Salah

Sunan an-Nasa'iIt was narrated from Abu Hurairah that the Messenger of Allah
Sunan an-Nasa'i · Book 5 · The Book of Salah
Sunan an-Nasa'i · كتاب 5 · كتاب الصلاة
"The first thing for which a person will be brought to account will be his Salah. If it is complete (all well and good), otherwise Allah will say: 'Look and see if My slave did any voluntary prayer.' If he is found to have done voluntary prayers, his obligatory prayers will be completed therewith
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا النَّضْرُ بْنُ شُمَيْلٍ، قَالَ أَنْبَأَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنِ الأَزْرَقِ بْنِ قَيْسٍ، عَنْ يَحْيَى بْنِ يَعْمَرَ، عَنْ أَبِي هُرَيْرَةَ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ ‏
"‏ أَوَّلُ مَا يُحَاسَبُ بِهِ الْعَبْدُ صَلاَتُهُ فَإِنْ كَانَ أَكْمَلَهَا وَإِلاَّ قَالَ اللَّهُ عَزَّ وَجَلَّ انْظُرُوا لِعَبْدِي مِنْ تَطَوُّعٍ فَإِنْ وُجِدَ لَهُ تَطَوُّعٌ قَالَ أَكْمِلُوا بِهِ الْفَرِيضَةَ ‏"‏ ‏.‏
Reference : Sunan an-Nasa'i 467In-book reference : Book 5, Hadith 20