کتاب (Relations between the Caliphs and the Ahl al رضا کاردان نشر مجمع جهانی اهل بیت

…عن زید بن ثابت قالَ: قالَ رسول الله: إنّی تارکُ فیکُمُ خلیفَتینِ: کتابَ الله حبلٌ ممدودٌ ما بِینَ السماء ِ و الارضِ أو ما بینَ السماءِ الی الاَرضِ و عترتی اهل بیتی و إنهما لن یفترقا حتّی یردا علیّ الحوض… …It has been narrated from Zaid Bin Thabit that the Prophet of God (s) stated: "Surely, I shall appoint two successors among you: the Book of God, which is a rope that has been stretched between the heavens and the earth; and my descendants, who are my household, and verily, these two are not distinct from one another till they meet me at the side of the pond (on the Day of Resurrection). -قسمتی از متن کتاب-