بُلُوغُ الْمَرَامِ
Bulugh al-Maram 531
The Book of Prayer
وَعَنْ عَلِيٍّ - رضى الله عنه - { أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -نَهَى عَنْ لُبْسِ الْقَسِيِّ وَالْمُعَصْفَرِ } رَوَاهُ مُسْلِمٌ [1] .
Narrated 'Ali (RA): Allah's Messenger (ﷺ) forbade wearing of silk and clothes dyed with safflower (a red dye). [Reported by Muslim].
Sunnah.com reference: Book 2, Hadith 462