Reward of dyeing one’s hair

Thawāb al-Aʿmāl wa ʿiqāb al-Aʿmāl|Volume 1|Book 2|Chapter 44
أَبِی ره قَالَ حَدَّثَنِی سَعْدُ بْنُ عَبْدِ اللَّهِ قَالَ حَدَّثَنِی أَحْمَدُ بْنُ أَبِی عَبْدِ اللَّهِ عَنْ أَبِیهِ عَنِ الْحَسَنِ بْنِ مُوسَی قَالَ سَمِعْتُ أَبَا الْحَسَنِ ع یَقُولُ قَالَ رَسُولُ اللَّهِ ص مَنِ اطَّلَی وَ اخْتَضَبَ بِالْحِنَّاءِ آمَنَهُ اللَّهُ مِنْ ثَلَاثِ خِصَالٍ الْجُذَامِ وَ الْبَرَصِ وَ الْآکِلَهِ إِلَی طَلْیَهٍ مِثْلِهَا.
6. It is narrated from Imam Musa Kadhim عليه السلام that the Holy Prophet صلى الله عليه وعلى آله وسلم said, “One who applies Noorah and dyes his body with henna Allah would keep him away from three things till he applies them again. Those three things are diseases like leprosy, leucoderma and scabies.”