كتاب العتق
Read the English translation first, with the original Arabic directly underneath.
Narrated Abu Huraira:
The Prophet (ﷺ) said, "If somebody fights (or beats somebody) then he should avoid the face."
إِذَا قَاتَلَ أَحَدُكُمْ فَلْيَجْتَنِبِ الْوَجْهَ