Al-Kāfi - The Book of Prayer

Chapter: Killing Insects, and So on during Salah (Prayer) َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّادٍ عَنْ حَرِيزٍ عَنْ ٠ٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلا٠) عَنِ الرَّجُلِ يَكُونُ فِي الصَّلاَةِ فَيَرَى الْحَيَّةَ أَوِ الْعَقْرَبَ يَقْتُلُهُ٠َا إِنْ آذَيَاهُ قَالَ نَعَ٠1.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad, from Hammad from Hariz from Muhammad ibn Muslim who has said the following: “I once asked abu ’Abd Allah (a.s.), about a man who in Salah (prayer) sees a snake or scorpion; can he kill it if it is hurting? He (the Imam) said, ’Yes, he can do so.”’ صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (15/241))