Mukhtasar Muslim (Abridged) 656 — About oud and camphor

Nafi' says that whenever Sayyiduna Ibn Umar (may Allah be pleased with them both) used incense, he would use pure aloeswood (oud) with nothing else mixed in it, or he would use camphor incense and add aloeswood to it, and then he would say that the Messenger of Allah (peace and blessings be upon him) also used to use fragrance in this manner.