‘Ubadah ibn al-Samit reported: The Messenger of Allah, peace and blessings be upon him, said, “Allah Almighty has made the five prayers an obligation. Whoever performs their ablution well, prays them at their proper time, and completes their bowing with the reverence due to them, then Allah has promised to forgive him. Whoever does not do so has no promise from Allah. If He wills, He will forgive him, and if He wills, He will punish Him.”
Source: Sunan Abī Dāwūd 425
Grade: Sahih (authentic) according to Al-Nawawi
عَنْ عُبَادَةَ بْنِ الصَّامِتِ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ خَمْسُ صَلَوَاتٍ افْتَرَضَهُنَّ اللَّهُ تَعَالَى مَنْ أَحْسَنَ وُضُوءَهُنَّ وَصَلَّاهُنَّ لِوَقْتِهِنَّ وَأَتَمَّ رُكُوعَهُنَّ وَخُشُوعَهُنَّ كَانَ لَهُ عَلَى اللَّهِ عَهْدٌ أَنْ يَغْفِرَ لَهُ وَمَنْ لَمْ يَفْعَلْ فَلَيْسَ لَهُ عَلَى اللَّهِ عَهْدٌ إِنْ شَاءَ غَفَرَ لَهُ وَإِنْ شَاءَ عَذَّبَهُ
425 سنن أبي داود كتاب الصلاة باب في المحافظة على وقت الصلوات
3/17 المحدث النووي خلاصة حكم المحدث صحيح في المجموع
