Urwah bin al-Zubayr narrates: Sayyiduna Abbas (may Allah be pleased with him) had accepted Islam, and he continued to carry out the duty of the Siqayah (that is, giving Zamzam water to the pilgrims); he did not emigrate.
Al-Tabarani recorded it as a mursal report, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 15472