Man Lā Yaḥḍuruh al-Faqīh
Hadith 277279 - وَ كَانَ اَلنَّبِيُّ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ وَ اَلْحُسَيْنُ بْنُ عَلِيٍّ وَ أَبُو جَعْفَرٍ مُحَمَّدُ بْنُ عَلِيٍّ عَلَيْهِ اَلسَّلاَمُ يَخْتَضِبُونَ بِالْكَتَمِ.
Hadith.279 - The Prophet, Imam Hussain ibn Ali (as) and Imam Muhammad ibn Ali Al-Baqir (as) used to dye their hair with katam (a plant-based dye often used in combination with henna to produce a darker color).