Al-Kāfi

Hadith 1419
prayer-etiquettejurisprudence
4ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ عَبْدِ الله بْنِ عَامِرٍ عَنْ عَلِيِّ بْنِ مَهْزِيَارَ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنْ أَبَانٍ عَنْ مُحَمَّدٍ قَالَ كَانَ أَبُو جَعْفَرٍ (عَلَيْهِ الْسَّلام) إِذَا وَجَدَ قَمْلَةً فِي الْمَسْجِدِ دَفَنَهَا فِي الْحَصَى.
4. Al-Husayn ibn Muhammad has narrated from ‘Abd Allah ibn ‘Amir, from Ali ibn Mahziyar from Fadalah ibn Ayyub, from Aban from Muhammad who has said the following: “When Abu Ja‘far (a.s.), would see lice in Masjid he would cover it with sand.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī