Ata' bin Abi Rabah said: Sayyiduna Abu Salamah (may Allah be pleased with him) and Sayyidah Umm Salamah (may Allah be pleased with her) set out to emigrate, and Sayyiduna Ammar bin Yasir (may Allah be pleased with him) went with them as well; he was an ally of theirs.
Al-Tabarani recorded it; its chain contains Umar bin Qays al-Makki, who is matruk (abandoned).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 15580