Imran al-Bajali has reported this statement of a freed slave of Sayyidah Umm Salamah (may Allah be pleased with her): I was with the Prophet (peace and blessings be upon him) on a journey. We reached a valley, and I began helping the people across (or carrying people's loads). The Prophet (peace and blessings be upon him) said: "Today you are a ship (safinah)." (Here the narrator is in doubt about the wording, but the meaning is this.)
Ahmad recorded it with two chains, and the narrators of one of them are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 15971
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه احمد فى المسند (221/5) ، أخرجه مسند أحمد برقم: 21417»