Aḥmad b. Muḥammad b. Yaḥyā al-ʿAṭṭār narrated to us, saying that Saʿd b. ʿAbd Allāh narrated to him among others, from al-Qāsim b. Muḥammad, from Sulaymān b. Dāwūd al-Munqarī, from Ḥafṣ b. Ghiyāth, who narrated: “I once said to al-Ṣādiq, Jaʿfar b. Muḥammad عليه السلام: “Inform me about the saying of Allāh عز وجل: ﴾The month of Ramaḍān is that in which was revealed the Qurʾān﴿ [2:185]—how was the Qurʾān revealed in the month of Ramaḍān, considering that the Qurʾān was revealed, from beginning to end, over the course of twenty years?” He عليه السلام replied: “The Qurʾān was revealed in the month of Ramaḍān, in the Bayt al-Maʿmūr—the Inhabited Dwelling—in a single instance, and then it was revealed from the Inhabited Dwelling (to the public) over the course of twenty years.”