Al-Kāfi

Hadith 1900
dress-adornment
عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ مُحَمَّدِ بْنِ عِيسَى عَنْ يُونُسَ قَالَ رَأَيْتُ عَلَى أَبِي الْحَسَنِ ( عليه السلام ) طَيْلَسَاناً أَزْرَقَ .
11. A number of our people have narrated from Sahl ibn Ziyad from Muhammad ibn ‘Isa from Yunus who has said the following: “I saw abu al-Hassan (a.s.), wearing al-Taylisan (pallium) of blue color.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī