Al-Kāfi

Hadith 2326
prophetic-medicine
عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ أَبِي نَصْرٍ عَنْ حَمَّادِ بْنِ عُثْمَانَ عَنْ مُحَمَّدِ بْنِ سُوقَةَ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ دُهْنُ الْبَنَفْسَجِ يَرْزُنُ الدِّمَاغَ .
8. A number of our people have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad from ibn abu Nasr from Hammad ibn ‘Uthaman from Muhammad ibn Sawqah who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘Viola oil calms down the condition of the brain/”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī