Musannaf Ibn Abi Shaybah 38506 — the first to do a thing, and who did

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said that the first among the women of the Arabs to start the custom of walking with a trailing hem was the mother of Isma'il. When she fled from Sarah, she let her hem trail behind her so that it would erase her footprints. And the first to go between Safa and Marwah was also the mother of Isma'il.