It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that Sayyidah Zaynab (may Allah be pleased with her), the daughter of the Messenger of Allah (peace and blessings be upon him), granted protection to Abu al-As bin al-Rabi', and the Messenger of Allah (peace and blessings be upon him) said: "Even the lowest in standing among the Muslims may grant protection on their behalf."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19894