وَ قَالَ مُوسَى بْنُ بَكْرٍ- لِلصَّادِقِ ع إِنَّ أَصْحَابَنَا يَقُولُونَ إِنَّمَا أَخْذُ الشَّارِبِ وَ الْأَظْفَارِ يَوْمَ الْجُمُعَةِ فَقَالَ سُبْحَانَ اللَّهِ خُذْهَا إِنْ شِئْتَ فِي يَوْمِ الْجُمُعَةِ وَ إِنْ شِئْتَ فِي سَائِرِ الْأَيَّامِ.
English translationBab Ul Qaim Publications
Hadith.313 - Musa ibn Bakr said to Imam Jafar ibn Muhammad Al-Sadiq (as): "Our companions say that trimming the mustache and nails is only on Jumu’ah." Imam (as) replied: "Glory be to Allah (swt)! Trim them if you wish on Jumu’ah, or if you wish, on any other day."
Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.