Sunan Abi Dawud — The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj) — Hadith No: 1745
Translation
A’ishah said ; I used to perfume the Messenger of Allah (SWAS) preparatory to his entering the sacred state before he put on Ihram, and preparatory to putting off Ihram before he made the circuits round the House (the Ka’bah)