"The Prophet ﷺ delayed the prayer one night until most of the night had passed and the people in the Masjid had gone home to sleep, then he went out and prayed, and said: 'This is indeed its (prayer) time, were it not that I would impose too much difficulty on my Ummah.'" (Using translation from Nasāʾī 536)   

أَعْتَمَ النَّبِيُّ ﷺ ذَاتَ لَيْلَةٍ حَتَّى ذَهَبَ عَامَّةُاللَّيْلِ وَحَتَّى نَامَ أَهْلُ الْمَسْجِدِ وَقَالَ ابْنُ بَكْرٍ رَقَدَ ثُمَّ خَرَجَ فَصَلَّى فَقَالَ إِنَّهُ لَوَقْتُهَا لَوْلَا أَنْ يَشُقَّ عَلَى أُمَّتِي وَقَالَ ابْنُ بَكْرٍ أَنْ أَشُقَّ  

[Machine] The Messenger of Allah ﷺ secluded himself one night until most of the night had passed and the people of the mosque had gone to sleep. Then he went out and prayed it and said, "It is its time, but I did not want to make it difficult for my Ummah."  

أَعْتَمَ رَسُولُ اللَّهِ ﷺ ذَاتَ لَيْلَةٍ حَتَّى ذَهَبَ عَامَّةُ اللَّيْلِ وَرَقَدَ أَهْلُ الْمَسْجِدِ فَخَرَجَ فَصَلَّاهَا فَقَالَ «إِنَّهُ لَوَقْتُهَا لَوْلَا أَنْ أَشُقَّ عَلَى أُمَّتِي»  

[Machine] The Messenger of Allah ﷺ stayed awake one night until most of the night had passed and even the people of the mosque had fallen asleep. Then he came out to them and prayed with them. He said, "It is the appropriate time for this prayer, but I refrained from it so as not to make it difficult for my ummah." This hadith is mentioned in the narration of 'Abd al-Razzaq and in the narration of Haggag from 'Aisha, the mother of the believers. She said, "He did not specifically mention the night prayer, but it is implied."  

أَعْتَمَ رَسُولُ اللهِ ﷺ ذَاتَ لَيْلَةٍ بِالْعَشَاءِ حَتَّى ذَهَبَ عَامَّةُ اللَّيْلِ وَحَتَّى نَامَ أَهْلُ الْمَسْجِدِ قَالَتْ ثُمَّ خَرَجَ إِلَيْهِمْ فَصَلَّى بِهِمْ وَقَالَ إِنَّهُ لَوَقْتُهَا لَوْلَا أَنْ أَشُقَّ عَلَى أُمَّتِي لَفْظُ حَدِيثِ عَبْدِ الرَّزَّاقِ وَفِي حَدِيثِ حَجَّاجٍ عَنْ عَائِشَةَ أُمِّ الْمُؤْمِنِينَ أَنَّهَا قَالَتْ وَلَمْ يَقُلْ بِالْعَشَاءِ وَالْبَاقِي بِمَعْنَاهُ سَوَاءٌ