كتاب الصيد والذبائح
Read the English translation first, with the original Arabic directly underneath.
It was narrated tht 'Adiyy bin Hatim said:
"I said: 'O Messenger of Allah, we are a people who hunt, and one of us may shoot his arrow but (the game) gets way from him for a night or two. What if he follows its tracks, and finds it dead with his arrow in it?" He said: "If you find the arrow in it, and you do not find any sign of predators, and you know that your arrow killed it, then eat it." (Sahih)
إِذَا وَجَدْتَ السَّهْمَ فِيهِ وَلَمْ تَجِدْ فِيهِ أَثَرَ سَبُعٍ وَعَلِمْتَ أَنَّ سَهْمَكَ قَتَلَهُ فَكُلْ