Sunan an-Nasa'i, Volume 6, Book 48, Hadith 5246 (DarusSalam) ⓘ
It was narrated that Ibn 'Umar said: "The Prophet [SAW] used to wear Sibtiyyah sandals and dye his beard yellow with Wars and saffron." And Ibn 'Umar used to do that.
أَخْبَرَنَا عَبْدَةُ بْنُ عَبْدِ الرَّحِيمِ، قَالَ أَنْبَأَنَا عَمْرُو بْنُ مُحَمَّدٍ، قَالَ أَنْبَأَنَا ابْنُ أَبِي رَوَّادٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم يَلْبَسُ النِّعَالَ السِّبْتِيَّةَ وَيُصَفِّرُ لِحْيَتَهُ بِالْوَرْسِ وَالزَّعْفَرَانِ . وَكَانَ ابْنُ عُمَرَ يَفْعَلُ ذَلِكَ .
also referenced under: Hadith 5244 (Reference) & Book 48, Hadith 205 (In-Book)