Ziyad bin Ilaqah narrates from his paternal uncle Qutbah (may Allah be pleased with him), and Ziyad bin Fayyad (may Allah have mercy on him) from Abu Iyad (may Allah have mercy on him), that they both said: It used to be disliked that a man should kill what does not harm him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 10072