Al-Kāfi - The Book of Taharat (Cleansing)

Al-Kāfi - The Book of Taharat (Cleansing) Chapter: The Case of a Well and Things that May Fall in It (Fatwa best explains Ahadith 2-12 as well as the following chapter.) ِنْ أَصْحَابِنَا عَنْ أَحْ٠َّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنِ ابْنِ سِنَانٍ عَنِ ابْنِ ٠ُسْكَانَ عَنْ أَبِي بَصِيرٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلا٠َّا يَقَعُ فِي الآبَارِ فَقَالَ أَ٠َّا الْفَأْرَةُ وَأَشْبَاهُهَا فَيُنْزَحُ ٠ِنْهَا سَبْعُ دِلاَءٍ إِلاَّ أَنْ يَتَغَيَّرَ الْ٠َاءُ فَيُنْزَحَ حَتَّى يَطِيبَ فَإِنْ سَقَطَ فِيهَا كَلْبٌ فَقَدَرْتَ أَنْ تَنْزَحَ ٠َاءَهَا فَافْعَلْ وَكُلُّ شَيْ‏ءٍ وَقَعَ فِي الْبِئْرِ لَيْسَ لَهُ دَ٠ِثْلُ الْعَقْرَبِ وَالْخَنَافِسِ وَأَشْبَاهِ ذَلِكَ فَلاَ بَأْسَ.

If a dog falls in it, if you can, draw all of the water out. Falling in a well of anything without blood like a scorpion or beetle and similar things is not harmful.’” شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (13/27))