Man Lā Yaḥḍuruh al-Faqīh
Hadith 10822650 - وَ رُوِيَ عَنْ مُعَاوِيَةَ بْنِ عَمَّارٍ قَالَ : قُلْتُ لِأَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ فِي اَلْمُحْرِمِ يَسْتَاكُ قَالَ «نَعَمْ» قَالَ قُلْتُ فَإِنْ أَدْمَى يَسْتَاكُ قَالَ «نَعَمْ هُوَ مِنَ اَلسُّنَّةِ.
Hadith.2650 - It was narrated from Mu'awiyah ibn Ammar, who said:
I asked Abu Abdullah (as) about a Muhrim using a miswak (tooth-stick).
Imam (as) said: "Yes."
I asked: "What if it causes bleeding while using it?"
Imam (as) said: "Yes, it is part of the Sunnah."