Imām Bukhārī narrates: Muhammad ibn al-'Alā' narrated to us, he said: Abū Usāmah informed us, from Buraid, from Abī Burdah, from Abū Mūsā, may Allāh be pleased with him, he narrates that:
I and my companions who came with me in the boat landed in the open plain of Bathān, and the Prophet ﷺ was in Madīnah. So every night, a group among them would come by turns to the Prophet ﷺ for the 'Ishā' prayer. So one day it happened to us: I and my companions went to the Prophet ﷺ, and he was engaged in some task at home. He delayed the prayer until it became midnight. Then the Prophet ﷺ came out, so he led them in prayer. So when he finished the prayer, he said to those present: Wait! Hear glad tidings! Among the blessings of Allāh the Exalted upon you is this: that at this time, no one else besides you is praying — or he said: at this time, no one else besides you has prayed. We do not remember which of these two things he said. Abū Mūsā said: We returned happily after hearing this from the Messenger of Allāh ﷺ.
حَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، قَالَ أَخْبَرَنَا أَبُو أُسَامَةَ، عَنْ بُرَيْدٍ، عَنْ أَبِي بُرْدَةَ، عَنْ أَبِي مُوسَى، قَالَ كُنْتُ أَنَا وَأَصْحَابِي الَّذِينَ، قَدِمُوا مَعِي فِي السَّفِينَةِ نُزُولاً فِي بَقِيعِ بُطْحَانَ، وَالنَّبِيُّ صلى الله عليه وسلم بِالْمَدِينَةِ، فَكَانَ يَتَنَاوَبُ النَّبِيَّ صلى الله عليه وسلم عِنْدَ صَلاَةِ الْعِشَاءِ كُلَّ لَيْلَةٍ نَفَرٌ مِنْهُمْ، فَوَافَقْنَا النَّبِيَّ ـ عليه السلام ـ أَنَا وَأَصْحَابِي وَلَهُ بَعْضُ الشُّغْلِ فِي بَعْضِ أَمْرِهِ فَأَعْتَمَ بِالصَّلاَةِ حَتَّى ابْهَارَّ اللَّيْلُ، ثُمَّ خَرَجَ النَّبِيُّ صلى الله عليه وسلم فَصَلَّى بِهِمْ، فَلَمَّا قَضَى صَلاَتَهُ قَالَ لِمَنْ حَضَرَهُ " عَلَى رِسْلِكُمْ، أَبْشِرُوا إِنَّ مِنْ نِعْمَةِ اللَّهِ عَلَيْكُمْ أَنَّهُ لَيْسَ أَحَدٌ مِنَ النَّاسِ يُصَلِّي هَذِهِ السَّاعَةَ غَيْرُكُمْ ". أَوْ قَالَ " مَا صَلَّى هَذِهِ السَّاعَةَ أَحَدٌ غَيْرُكُمْ ". لاَ يَدْرِي أَىَّ الْكَلِمَتَيْنِ قَالَ. قَالَ أَبُو مُوسَى فَرَجَعْنَا فَفَرِحْنَا بِمَا سَمِعْنَا مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم.
Reference: Sahih Al Bukhari 567