Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrated: The Prophet (peace and blessings be upon him) said: "The example of my Ahl al-Bayt is like the ark of Sayyiduna Nuh (peace be upon him): whoever boarded it was saved, and whoever stayed behind from it drowned."
Al-Bazzar and al-Tabarani recorded it; its chain contains a narrator, al-Hasan bin Abi Ja'far, who is matruk (abandoned).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14979