Ibn al-Musayyib was heard saying :
“God is good and likes what is fragrant (Tayyib is ‘good’ and tib is ‘perfume’, or ‘fragrance.’); clean and likes cleanliness; generous and likes generosity; munificent and likes munificence; so cleanse (I think he said, your courtyards), and do not imitate the Jews.” I mentioned that to Muhajir b. Mismar and he said he had been told by ‘Amir b. Sa‘d, on his father’s authority, that the Prophet had said something similar, but he said, “Cleanse your courtyards.”
Tirmidhi transmitted it.