"There is no person who kills a small bird or anything larger, for no just reason, but Allah will ask him about it." It was said: "O Messenger of Allah, what does 'just reason mean?" He said: "That you slaughters it and eat it, and o not cut off its head and throw it aside,"  

مَنْ قَتَلَ عُصْفُورًا فَمَا فَوْقَهَا بِغَيْرِ حَقِّهَا سَأَلَ اللَّهُ عَزَّ جَلَّ عَنْهَا يَوْمَ الْقِيَامَةِ قِيلَ يَا رَسُولَ اللَّهِ فَمَا حَقُّهَا قَالَ حَقُّهَا أَنْ تَذْبَحَهَا فَتَأْكُلَهَا وَلاَ تَقْطَعْ رَأْسَهَا فَيُرْمَى بِهَا  

"I heard Sharid say: 'I herd the Messenger of Allah say: Whoever kills a small bird for no reason, it will beseech Allah on the Day of Resurrection saying: O Lord, so and so killed me for no reason. And he did not kill me for any beneficial purpose."'  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ قَتَلَ عُصْفُورًا عَبَثًا عَجَّ إِلَى اللَّهِ ﷻ يَوْمَ الْقِيَامَةِ يَقُولُ يَا رَبِّ إِنَّ فُلاَنًا قَتَلَنِي عَبَثًا وَلَمْ يَقْتُلْنِي لِمَنْفَعَةٍ