I heard Abā ‘Abdillāh (Imam Sādiq (a.s.)) say: Allāh has not created any creation greater in number than the angels. Every evening, seventy thousand angels descend from the heavens. They perform Ťawāf around Bayt Al-Ḥarām (Ka’bah) until dawn, after which they proceed to the grave of the Prophet (s.a.a.w.) and say Salām to him. Then they go to the grave of the Commander of the Believers (a.s.) to say Salām to him, after which they go to the grave of Ḥusain (a.s.) and say Salām to him; and then they ascend back to the heavens before sunrise. Then seventy thousand angels from among the angels of the day descend from the heavens. They (too) perform Ťawāf around Bayt Al-Ḥarām (Ka’bah) until sunset, after which they proceed to the grave of the Messenger of Allāh (s.a.a.w.) and say Salām to him. Then they go to the grave of the Commander of the Believers (a.s.) to say Salām to him, after which they go to the grave of Ḥusain (a.s.) and say Salām to him; and then they ascend back to the heavens before nightfall.