Musannaf Ibn Abi Shayba 1:616

616. Sharik narrated to us, from Abdullah ibn Isa, from Musa ibn Abdullah ibn Yazid, from a woman from Banu Abd al-Ashhal, that she asked the Prophet (peace be upon him): "Between me and the mosque is a dirty path." He said, "Is there a cleaner path than it?" She said, "Yes." He said, "This [one] is for that [one]."