790. hadíth
وَ رَوَى زُرَارَةُ عَنْهُ أَنَّهُ قَالَ لَهُ: رَجُلٌ يَرَى اَلْعَقْرَبَ وَ اَلْأَفْعَى وَ اَلْحَيَّةَ وَ هُوَ يُصَلِّي أَ يَقْتُلُهَا قَالَ «نَعَمْ إِنْ شَاءَ فَعَلَ.
Zurarah narrated that a man asked him (Abu Ja'far (a.s)): "If a person sees a scorpion, a snake, or a serpent while he is praying, should he kill it?" Imam (a.s) said: "Yes, if he wishes to do so."