Sayyiduna Jabir (may Allah be pleased with him) said: People used to call (Madinah) "Madinah" and "Yathrib", so the Messenger of Allah (peace and blessings be upon him) said: "Allah, the Mighty and Majestic, has named it Tabah."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1957