"The Messenger of Allah ﷺ said: 'Whoever has the habit of praying at night but he sleeps and misses it, that is a charity that Allah (SWT) has given to him, and the reward of his prayer will be recorded for him.'"
قَالَ رَسُولُ اللَّهِ ﷺ مَنْ كَانَتْ لَهُ صَلاَةٌ صَلاَّهَا مِنَ اللَّيْلِ فَنَامَ عَنْهَا كَانَ ذَلِكَ صَدَقَةً تَصَدَّقَ اللَّهُ ﷻ عَلَيْهِ وَكَتَبَ لَهُ أَجْرَ صَلاَتِهِ
The Prophet ﷺ said: Any person who offers prayer at night regularly but (on a certain night) he is dominated by sleep will be given the reward of praying. His sleep will be almsgiving. (Using translation from Abū Dāʾūd 1314)
أَنَّ النَّبِيَّ ﷺ قَالَ مَا مِنَ امْرِئٍ تَكُونُ لَهُ صَلَاةٌ بِاللَّيْلِ فَيَغْلِبُهُ عَلَيْهَا نَوْمٌ إِلَّا كَتَبَ اللهُ ﷻ لَهُ أَجْرَ صَلَاتِهِ وَكَانَ نَوْمُهُ ذَلِكَ صَدَقَةً
[Machine] The Messenger of Allah ﷺ said, "There is no man who stands in prayer for an hour at night and then goes to sleep, except that the reward for his prayer is written for him. And his sleep is counted as a charity that is given to him."
قَالَ رَسُولُ اللهِ ﷺ مَا مِنْ رَجُلٍ تَكُونُ لَهُ سَاعَةٌ مِنَ اللَّيْلٍ يَقُومُهَا فَيَنَامُ عَنْهَا إِلَّا كُتِبَ لَهُ أَجْرُ صَلَاتِهِوَكَانَ نَوْمُهُ عَلَيْهِ صَدَقَةً تُصُدِّقَ بِهِ عَلَيْهِ
"مَا مِنْ رَجُلٍ يَكُونُ لَهُ سَاعَةٌ مِنَ اللَّيلِ يَقُومُهَا فَيَنَامُ عَنْهَا إِلا كُتِبَ لَهُ أَجْرُ صَلاتِهِ وَكَانَ نَوْمُهُ عَلَيهِ صَدَقَةً يُصَّدَّقُ بِهَا عَلَيهِ".