Man Lā Yaḥḍuruh al-Faqīh #306Hadith.308 - Imam Jafar ibn Muhammad Al-Sadiq (as) said:
"Whoever trims their nails on Jumu’ah will not have disheveled fingertips."
Man Lā Yaḥḍuruh al-Faqīh #307Hadith.309 - Imam Jafar ibn Muhammad Al-Sadiq (as) said:
"Whoever trims their nails on Thursday but leaves one nail to trim on Jumu’ah,...
Al-Khiṣāl #634“God’s Prophet (MGB) ordered us to bury the following four things: hair, teeth, nails and blood.”