Riyad as-Salihin, 1081

Abu Hurairah (May Allah be pleased with him) reported:

The Messenger of Allah (ﷺ) said, "The first of man's deeds for which he will be called to account on the Day of Resurrection will be Salat. If it is found to be perfect, he will be safe and successful; but if it is incomplete, he will be unfortunate and a loser. If any shortcoming is found in the obligatory Salat, the Glorious and Exalted Rubb will command to see whether His slave has offered any voluntary Salat so that the obligatory Salat may be made up by it. Then the rest of his actions will be treated in the same manner." [At- Tirmidhi].

وعن أبي هريرة رضي الله عنه قال‏:‏ قال رسول الله صلى الله عليه وسلم‏:‏ ‏

‏إن أول ما يحاسب به العبد يوم القيامة من عمله صلاته، فإن صلحت، فقد أفلح وأنجح، وإن فسدت، فقد خاب وخسر، فإن انتقص من فريضته شيئًا، قال الرب، عز وجل‏:‏ انظروا هل لعبدي من تطوع، فيكمل منها ما انتقص من الفريضة‏؟‏ ثم يكون سائر أعماله على هذا‏

‏ ‏(‏‏(‏رواه الترمذي وقال حديث حسن‏)‏‏)‏‏.‏

References1 variant

In-Book Reference: Book 8, Hadith 91

Sharh · explanationclick to expand

Guidance from the Hadith: 1) Prayer is among the first deeds about which a person will be questioned on the Day of Judgment. 2) The soundness of a person’s prayer makes his reckoning easy on the Day of Judgment. 3) Supererogatory prayers complement the obligatory ones. So, a wise person would be keen to offer supererogatory prayer so as to make up for any deficiency in his obligatory prayers and to win the love of his Lord. 4) Out of His mercy towards His servants, Allah Almighty has legislated for them supererogatory prayers as a safeguard and in recognition of the great status of the obligations, and to make up for any deficiency in them.