Hadith on Curses: Forbidden to curse animals

‘Imran ibn Husayn reported: We were with the Messenger of Allah, peace and blessings be upon him, during one of his journeys and a woman from the Ansar was on a camel. She disparaged it and cursed it. When the Prophet heard it, he said, “Unload the camel and set it free, for it has been cursed.”

Source: Ṣaḥīḥ Muslim 2595

Grade: Sahih (authentic) according to Muslim

عَنْ عِمْرَانَ بْنِ حُصَيْنٍ قَالَ بَيْنَمَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي بَعْضِ أَسْفَارِهِ وَامْرَأَةٌ مِنْ الْأَنْصَارِ عَلَى نَاقَةٍ فَضَجِرَتْ فَلَعَنَتْهَا فَسَمِعَ ذَلِكَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ خُذُوا مَا عَلَيْهَا وَدَعُوهَا فَإِنَّهَا مَلْعُونَةٌ

2595 صحيح مسلم كتاب البر والصلة والآداب باب النهي عن لعن الدواب وغيرها