The Prophet ﷺ said: Our Lord Most High is pleased with a man who fights in the path of Allah, the Exalted; then his companions fled away (i.e. retreated). But he knew that it was a sin (to flee away from the battlefield), so he returned, and his blood was shed. Thereupon Allah, the Exalted, says to His angels: Look at My servant; he returned seeking what I have for him (i.e. the reward), and fearing (the punishment) I have, until his blood was shed. (Using translation from Abū Dāʾūd 2536)
قَالَ رَسُولُ اللهِ ﷺ عَجِبَ رَبُّنَا ﷻ مِنْ رَجُلٍ غَزَا فِي سَبِيلِ اللهِ فَانْهَزَمَ أَصْحَابُهُ فَعَلِمَ مَا عَلَيْهِ فَرَجَعَ حَتَّى أُهْرِيقَ دَمُهُ فَيَقُولُ اللهُ ﷻ لِمَلَائِكَتِهِ انْظُرُوا إِلَى عَبْدِي رَجَعَ رَغْبَةً فِيمَا عِنْدِي وَشَفَقَةً مِمَّا عِنْدِي حَتَّى أُهْرِيقَ دَمُهُ