(18) باب الطِّيبِ عِنْدَ الإِحْرَامِ
Narrated `Aisha:
(the wife of the Prophet (p.b.u.h) I used to scent Allah's Messenger (ﷺ) when he wanted to assume Ihram and also on finishing Ihram before the Tawaf round the Ka`ba (Tawaf-al-ifada).
Reference: Sahih al-Bukhari 1539
In-book reference: Book 25, Hadith 26
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 26, Hadith 612