Bulugh al-Maram, Book 12, Hadith 1335 (In-Book)

Abu Tha'labah (RAA) narrated that the Messenger of Allah said: "When you shoot your arrow and the game has gone our of sight, eat it when you come upon it, provided it has not become rotten."

وَعَنْ أَبِي ثَعْلَبَةَ ‏- رضى الله عنه ‏- عَنِ اَلنَّبِيِّ ‏- صلى الله عليه وسلم ‏-قَالَ: { " إِذَا رَمَيْتَ بِسَهْمِكَ, فَغَابَ عَنْكَ, فَأَدْرَكْتَهُ فَكُلْهُ, مَا لَمْ يُنْتِنْ" } أَخْرَجَهُ مُسْلِمٌ (1749)‏.‏ ‏1 ‏- صحيح.‏ رواه مسلم ( 1931 )‏.‏

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also referenced under: Book 12, Hadith 1375 (English)