question #1 Sahih al-Bukhari 6894, Book 87, Hadith 32 : What is the concept of Qisas in Islamic law and how is it applied in cases of physical harm?

The daughter of An-Nadr slapped a girl and broke her incisor tooth. They (the relatives of that girl),
came to the Prophet (ﷺ) and he gave the order of Qisas (equality in punishment).