323. hadíth
وَقَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «اَلْمَشْطُ يَذْهَبُ بِالْوَبَاءِ. وهو الحمى. وَ فِي رِوَايَةِ أَحْمَدَ بْنِ أَبِي عَبْدِ اَللَّهِ اَلْبَرْقِيِّ: «يَذْهَبُ بِالْوَنَا. وَ هُوَ اَلضَّعْفُ قَالَ اَللَّهُ عَزَّ وَ جَلَّ: «وَ لاٰ تَنِيٰا فِي ذِكْرِي» أَيْ لاَ تَضْعُفَا.
Imam Jafar ibn Muhammad Al-Sadiq (a.s) said: "Combing the hair removes ailments," referring specifically to fever. In a narration by Ahmad ibn Abi Abdullah al-Barqi, it is stated: 'It removes fatigue,' meaning weakness. Allah (swt), the Exalted, said: 'And do not slacken in My remembrance,' (Surah Taha 20:42) meaning do not become weak.