مشكوة المصابيح Mishkat al-Masabih كتاب اللباس The Book of Clothing
(وَضْعُ ٱلزَّيْتِ عَلَى ٱلرَّأْسِ وَٱللِّحْيَةِ)

(Applying oil on the head and beard)

1 hadith
Hadith 4445
وَعَنْهُ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم يُكثر دهن رَأسه وتسريحَ لحيته وَيُكْثِرُ الْقِنَاعَ كَأَنَّ ثَوْبَهُ ثَوْبُ زَيَّاتٍ. رَوَاهُ فِي شرح السّنة
He said God’s messenger often greased his head and combed his beard, and he often wore a head veil as though his garment (the explanation which seems to be preferred is that the word "garment’’ here refers to the cloth like a veil which was used to protect the turban from the grease.) were that of an olive-oil seller. It is transmitted in Sharh as sunna.
Hadith Reference Mishkat al-Masabih / The Book of Clothing / Hadith: 4445
Hadith Grading الألبانی: لم تتمّ دراسته  |  زبیر علی زئی: إسناده ضعيف
Hadith Takhrij ´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده ضعيف، رواه البغوي في شرح السنة (82/12 ح 3164) [و الترمذي في الشمائل (125، 33) ]¤٭ فيه يزيد بن أبان الرقاشي: ضعيف مشھور .»