Musnad Ahmad 1153:1505

Hushaym narrated to us, he said: Mansur informed us, from Abd al-Rahman ibn al-Qasim, from his father, from Aisha, she said: "I perfumed the Prophet, may Allah bless him and grant him peace, with perfume containing musk at the time of his ihram before he entered into ihram, and on the Day of Sacrifice before he performed tawaf around the House."