• أَسْرِ
• أَسْرَىٰ
• سَرِيّ
• يَسْرِ

Appears 8 times in the Quran.

1. 11:81 قَالُوا۟ يَٰلُوطُ إِنَّا رُسُلُ رَبِّكَ لَن يَصِلُوٓا۟ إِلَيْكَ فَأَسْرِ بِأَهْلِكَ بِقِطْعٍ مِّنَ ٱلَّيْلِ وَلَا يَلْتَفِتْ مِنكُمْ أَحَدٌ إِلَّا ٱمْرَأَتَكَ إِنَّهُۥ مُصِيبُهَا مَآ أَصَابَهُمْ إِنَّ مَوْعِدَهُمُ ٱلصُّبْحُ أَلَيْسَ ٱلصُّبْحُ بِقَرِيبٍ

   They said: O Lut! we are the messengers of your Lord; they shall by no means reach you; so remove your followers in a part of the night-- and let none of you turn back-- except your wife, for surely whatsoever befalls them shall befall her; surely their appointed time is the morning; is not the morning nigh?
   

2. 15:65 فَأَسْرِ بِأَهْلِكَ بِقِطْعٍ مِّنَ ٱلَّيْلِ وَٱتَّبِعْ أَدْبَٰرَهُمْ وَلَا يَلْتَفِتْ مِنكُمْ أَحَدٌ وَٱمْضُوا۟ حَيْثُ تُؤْمَرُونَ

   Therefore go forth with your followers in a part of the night and yourself follow their rear, and let not any one of you turn round, and go forth whither you are commanded.
   

3. 17:1 سُبْحَٰنَ ٱلَّذِىٓ أَسْرَىٰ بِعَبْدِهِۦ لَيْلًا مِّنَ ٱلْمَسْجِدِ ٱلْحَرَامِ إِلَى ٱلْمَسْجِدِ ٱلْأَقْصَا ٱلَّذِى بَٰرَكْنَا حَوْلَهُۥ لِنُرِيَهُۥ مِنْ ءَايَٰتِنَآ إِنَّهُۥ هُوَ ٱلسَّمِيعُ ٱلْبَصِيرُ

   Glory be to Him Who made His servant to go on a night from the Sacred Mosque to the remote mosque of which We have blessed the precincts, so that We may show to him some of Our signs; surely He is the Hearing, the Seeing.
   

4. 19:24 فَنَادَىٰهَا مِن تَحْتِهَآ أَلَّا تَحْزَنِى قَدْ جَعَلَ رَبُّكِ تَحْتَكِ سَرِيًّا

   Then (the child) called out to her from beneath her: Grieve not, surely your Lord has made a stream to flow beneath you;
   

5. 20:77 وَلَقَدْ أَوْحَيْنَآ إِلَىٰ مُوسَىٰٓ أَنْ أَسْرِ بِعِبَادِى فَٱضْرِبْ لَهُمْ طَرِيقًا فِى ٱلْبَحْرِ يَبَسًا لَّا تَخَٰفُ دَرَكًا وَلَا تَخْشَىٰ

   And certainly We revealed to Musa, saying: Travel by night with My servants, then make for them a dry path in the sea, not fearing to be overtaken, nor being afraid.
   

6. 26:52 وَأَوْحَيْنَآ إِلَىٰ مُوسَىٰٓ أَنْ أَسْرِ بِعِبَادِىٓ إِنَّكُم مُّتَّبَعُونَ

   And We revealed to Musa, saying: Go away with My servants travelling by night, surely you will be pursued.
   

7. 44:23 فَأَسْرِ بِعِبَادِى لَيْلًا إِنَّكُم مُّتَّبَعُونَ

   So go forth with My servants by night; surely you will be pursued:
   

8. 89:4 وَٱلَّيْلِ إِذَا يَسْرِ

   And the night when it departs.