‘Ali ibn Ḥusain (Imam Sajjād (a.s.)) said: Those who would like one hundred and twenty-four thousand prophets to shake their hand, should go to the Ziyārah of the grave of Abī ‘Abdillāh, Ḥusain ibn ‘Ali (a.s.), on the fifteenth of Sha’bān. Verily the souls of the prophets (a.s.), including the five ULUL ‘AZM Messengers, ask permission from Allāh (on that day) to go to his Ziyārah and they will be granted permission. We asked, “Who are the five Ulul ‘Azm (prophets)?” Imam (a.s.) replied, “Nūḥ, Ibrāhīm, Mūsā, ‘Isā (a.s.), and Muḥammad (s.a.a.w.).” We asked, “What does Ulul ‘Azm mean?” Imam (a.s.) replied, “They (are the prophets who) were sent to the east and the west of the earth and to (all of) Jinn and mankind.” The above Ḥadīth has also been narrated to me through the following chain: My father and all of my scholars, from Sa’d ibn ‘Abdillāh, from Ḥasan ibn ‘Ali Al-Zaytūni, and from others, from Aḥmad ibn Hilāl, from Muḥammad ibn Abī ‘Umayr, from Ḥammād ibn ‘Uthmān, from Abī Basīr, from Abī ‘Abdillāh (Imam Sādiq (a.s.)).