Man Lā Yaḥḍuruh al-Faqīh
Hadith 8222384 - وَ رَوَى عَنْهُ عَلَيْهِ اَلسَّلاَمُ مُعَاوِيَةُ بْنُ عَمَّارٍ أَنَّهُ قَالَ : «لاَ بَأْسَ بِقَتْلِ اَلنَّمْلِ وَ اَلْبَقِّ فِي اَلْحَرَمِ » وَ قَالَ «لاَ بَأْسَ بِقَتْلِ اَلْقَمْلَةِ فِي اَلْحَرَمِ وَ غَيْرِهِ».
Hadith.2384 - Muawiya ibn Ammar narrated from Imam Jafar ibn Muhammad Al-Sadiq (as) that he said: "There is no harm in killing ants and bedbugs in the sacred sanctuary (Al-Haram)."
Imam (as) also said: "There is no harm in killing lice both within the sanctuary and outside of it."