Hadith
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عُمَرَ، حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، حَدَّثَنَا مُحَمَّدُ بْنُ إِسْحَاقَ، حَدَّثَنِي يَزِيدُ بْنُ أَبِي حَبِيبٍ، عَنْ مَرْثَدِ بْنِ عَبْدِ اللَّهِ، قَالَ لَمَّا قَدِمَ عَلَيْنَا أَبُو أَيُّوبَ غَازِيًا وَعُقْبَةُ بْنُ عَامِرٍ يَوْمَئِذٍ عَلَى مِصْرَ فَأَخَّرَ الْمَغْرِبَ فَقَامَ إِلَيْهِ أَبُو أَيُّوبَ فَقَالَ لَهُ مَا هَذِهِ الصَّلاَةُ يَا عُقْبَةُ فَقَالَ شُغِلْنَا . قَالَ أَمَا سَمِعْتَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " لاَ تَزَالُ أُمَّتِي بِخَيْرٍ - أَوْ قَالَ عَلَى الْفِطْرَةِ - مَا لَمْ يُؤَخِّرُوا الْمَغْرِبَ إِلَى أَنْ تَشْتَبِكَ النُّجُومُ " .
Narrated AbuAyyub: Marthad ibn Abdullah said: When AbuAyyub came upon us to fight the infidels and in those days Uqbah ibn Amir was the Governor of Egypt, he (Uqbah) delayed the sunset prayer. Hence AbuAyyub stood and said: What kind of prayer is this, Uqbah? He said: We were busy. He said: Did you not hear the Messenger of Allah (ﷺ) say: My community will remain well, or he said: will remain on its natural condition, so long as it would not delay the evening prayer until the stars shine brightly just like a network
Sahih · Al-Albani
Sunan Abi Dawud 418 ·Book 2, Hadith 28·Also available on sunnah.com·