(9) باب الْمُحَاسَبَةِ عَلَى الصَّلاَةِ .
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:
"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." (ES)
Reference (ES): Sunan an-Nasa'i 467 (ES)
In-book reference (ES): Book 5, Hadith 20 (ES)
English translation (ES): Vol. 1, Book 5, Hadith 468 (ES)