AbuMuhammad fancies that witr prayer is essential. (Hearing this) Ubadah ibn as-Samit said: AbuMuhammad was wrong. I bear witness that I heard the Messenger of Allah ﷺ say: Allah, the Exalted, has made five prayers obligatory. If anyone performs ablution for them well, offers them at their (right) time, and observes perfectly their bowing and submissiveness in them, it is the guarantee of Allah that He will pardon him; if anyone does not do so, there is no guarantee for him on the part of Allah; He may pardon him if He wills, and punish him if He wills.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ خَمْسُ صَلَوَاتٍ افْتَرَضَهُنَّ اللَّهُ تَعَالَى مَنْ أَحْسَنَ وُضُوءَهُنَّ وَصَلاَّهُنَّ 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  

AbuMuhammad fancies that witr prayer is essential. (Hearing this) Ubadah ibn as-Samit said: AbuMuhammad was wrong. I bear witness that I heard the Messenger of Allah ﷺ say: Allah, the Exalted, has made five prayers obligatory. If anyone performs ablution for them well, offers them at their (right) time, and observes perfectly their bowing and submissiveness in them, it is the guarantee of Allah that He will pardon him; if anyone does not do so, there is no guarantee for him on the part of Allah; He may pardon him if He wills, and punish him if He wills. (Using translation from Abū Dāʾūd 425)   

لَسَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ خَمْسُ صَلَوَاتٍ افْتَرَضَهُنَّ اللهُ عَلَى عِبَادِهِ مَنْ أَحْسَنَ وُضُوءَهُنَّ وَصَلَّاهُنَّ لِوَقْتِهِنَّ فَأَتَمَّ رُكُوعَهُنَّ وَسُجُودَهُنَّ وَخُشُوعَهُنَّ كَانَ لَهُ عِنْدَ اللهِ عَهْدٌ أَنْ يَغْفِرَ لَهُ وَمَنْ لَمْ يَفْعَلْ فَلَيْسَ لَهُ عِنْدَ اللهِ عَهْدٌ إِنْ شَاءَ غَفَرَ لَهُ وَإِنْ شَاءَ عَذَّبَهُ  

AbuMuhammad fancies that witr prayer is essential. (Hearing this) Ubadah ibn as-Samit said: AbuMuhammad was wrong. I bear witness that I heard the Messenger of Allah ﷺ say: Allah, the Exalted, has made five prayers obligatory. If anyone performs ablution for them well, offers them at their (right) time, and observes perfectly their bowing and submissiveness in them, it is the guarantee of Allah that He will pardon him; if anyone does not do so, there is no guarantee for him on the part of Allah; He may pardon him if He wills, and punish him if He wills. (Using translation from Abū Dāʾūd 425)   

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ خَمْسُ صَلَوَاتٍ افْتَرَضَهُنَّ اللهُ مَنْ أَحْسَنَ وُضُوءَهُنَّ وَصَلَوَاتِهِنَّ لِوَقْتِهِنَّ وَأَتَمَّ رُكُوعَهُنَّ وَخُشُوعَهُنَّ كَانَ لَهُ عِنْدَ اللهِ عَهْدٌ أَنْ يَغْفِرَ لَهُ وَمَنْ لَمْ يَفْعَلْ فَلَيْسَ لَهُ عِنْدَ اللهِ عَهْدٌ إِنْ شَاءَ غَفَرَ لَهُ وَإِنْ شَاءَ عَذَّبَهُ لَيْسَ فِي حَدِيثِ آدَمَ ذِكْرُ الْوِتْرِ وَقَالَ عَنْ أَبِي عَبْدِ اللهِ الصُّنَابِحِيِّ  

"خَمْسُ صلَواتٍ افترضَهُنَّ اللَّهُ ﷻ مَن أَحْسنَ وضُوءَهُنَّ، وصَلَاتهُنَّ لِوَقْتِهنَّ، وأَتمَّ رُكُوعَهُنَّ، وسُجُودَهُنَّ، وخُشوعَهُنَّ كَان لهُ عَلَى اللَّهِ عهْد أَنْ يغفرَ لَهُ، ومنْ لَمْ يَفعلْ فَلَيْسَ لَهُ علَى اللَّهِ عَهْد، إِنْ شاءَ غَفَرَ لَهُ وَإِنْ شَاءَ عَذَّبَهُ".  

"مَن صَلَّى الصَّلَوَاتِ الْخَمْسَ فَأَتَمَهُنَّ وَأَقَامَهُنَّ وَصَلاهُنَّ لِوَقْتِهِنَّ جَاءَ يَوْمَ الْقِيَامَةِ وَلَهُ عَلَى اللهِ عَهْدٌ أَن لا يُعَذِّبَهُ، وَمَنْ لَمْ يُصَلِّهِنَّ وَلَمْ يُقِمْهُنَّ، جَاءَ يَوْمَ القِيَامَةِ وَلَيسَ لَهُ عَلَى اللهِ عَهْدٌ إِنْ شاءَ غَفَرَ لَهُ، وَإِنْ شَاءَ عَذَّبَهُ".