Sayyiduna Ali (may Allah be pleased with him) said: "Every prophet was given seven noble companions, and we have been given fourteen." We asked Ali (may Allah be pleased with him): Who are they? He said: I, my two sons, Ja'far, Hamzah, Abu Bakr, Umar, Mus'ab bin Umayr, Bilal, Salman, Ammar and Abdullah bin Mas'ud (may Allah be pleased with them). In this hadith the count of fourteen is not completed.
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 6022