the obligatory prayers
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1 To complete and rectify the obligatory prayers
It was narrated from Abu Hurairah ( may Allah be pleased with him ) that the Messenger of Allah ( may peace and blessings of Allah be upon him ) 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."
[ Sunan an-Nasa'i ]