Musannaf Ibn Abi Shayba 33:1277

Yunus ibn Muhammad narrated to us, he said: Dawud ibn Abd al-Rahman narrated to us, from Mansur ibn Safiyya, he said: Ashras ibn Hassan al-Kufi narrated to me, he said: I heard Wahb ibn Munabbih say: Harun (Aaron) was the one who would perfume the churches.