Sayyiduna Safinah (may Allah be pleased with him) said: We were with the Messenger of Allah (peace and blessings be upon him) on a journey, and whenever a person grew tired he would throw his sword and shield onto me, until I was carrying a great deal. Then the Prophet (peace and blessings be upon him) said: "You are a ship."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 6410