Abū ‘Abdillāh (Imam Sādiq (a.s.)) said: O son of Bukayr! Verily Allāh has chosen six places on earth: Bayt Al-Ḥarām (Ka’bah), Ḥaram (Masjid Al-Ḥarām), the graves of the prophets, the graves of the successors, the places of the martyrdom of the Martyrs, and the mosques in which the name of Allāh is remembered. O son of Bukayr! Do you know the reward for those who go to the Ziyārah of the grave of Abī ‘Abdillāh, Al-Ḥusain (a.s.), although the ignorant neglect it?! Every morning, an angel calls out next to the grave of Ḥusain, “O those who seek blessings! Come to Allāh’s chosen one (Ḥusain (a.s.)) so that you may return with honour and are protected from regret!” This call is heard by all of the inhabitants of the east and the west, except by mankind and Jinn. (Upon hearing this call), all of the angels on earth go to the Zuwwār of Ḥusain (a.s.) while they are asleep, sanctify Allāh close to them, and ask Allāh to be pleased with them (the Zuwwār). All of the angels in the air, who hear this call, respond to it by glorifying Allāh, the Exalted. The voices of the angels are raised and the inhabitants of the first sky respond to their voices (by glorifying Allāh). The voices of the angels and the inhabitants of the first sky are loud enough for the inhabitants of the seventh sky and for the prophets to hear, who then (in turn ask Allāh to) send mercy and blessings on Ḥusain (a.s.) and pray for those who go to his Ziyārah.