Chapter 1: Purification (Kitab Al-Taharah)
Narrated Abdullah ibn Mas' ud: We would not wash our feet after treading on something unclean, nor would we hold our hair and garments (during prayer). Abu Dawud said: The tradition has been reported by Ibrahim b. Abi Mu' awiyah through a different chain of narrators: A' mash - Shaqiq - Masruq - 'Abd Allah (b. Mas' ud). And Hannad reported from Shaqiq, or reported on his authority saying: 'Abd Allah (b. Mas' ud) said.
Sunan Abi Dawud 204