Musannaf Ibn Abi Shaybah 620 — A man who steps on a filthy place

The umm walad of Ibrahim bin Abd al-Rahman said: My hem was long and I used to walk dragging it. Sometimes I would pass over a dirty place and then a clean place. I came to Sayyidah Umm Salamah (may Allah be pleased with her) and asked her about this, and she said: "I heard the Messenger of Allah (peace and blessings be upon him) say: 'The place after it purifies it.'"