It wasnarrated from Ibn 'Umar that the Prophet (ﷺ) used to put oilonhis head when he was in the state of Ihram, but not oil that wasperfumed. (AR)
English reference (AR): Vol. 4, Book 25, Hadith 3083 (AR)
Arabic reference (AR): Book 25, Hadith 3201 (AR)