Muwatta Malik, Book 25, Hadith 1055 (In-Book) ⓘ

ahya related to me from Malik that Nafi said, "I was at al-Juruf (near Madina) and threw a stone at two birds, and hit them. One of them died, and Abdullah ibn Umar threw it away, and then went to slaughter the other one with an adze. It died before he could slaughter it, so Abdullah threw that one away as well."

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّهُ قَالَ رَمَيْتُ طَائِرَيْنِ بِحَجَرٍ وَأَنَا بِالْجُرْفِ، فَأَصَبْتُهُمَا فَأَمَّا أَحَدُهُمَا فَمَاتَ فَطَرَحَهُ عَبْدُ اللَّهِ بْنُ عُمَرَ وَأَمَّا الآخَرُ فَذَهَبَ عَبْدُ اللَّهِ بْنُ عُمَرَ يُذَكِّيهِ بِقَدُومٍ فَمَاتَ قَبْلَ أَنْ يُذَكِّيَهُ فَطَرَحَهُ عَبْدُ اللَّهِ أَيْضًا ‏.‏