Aḥmad b. al-Ḥasan al-Qaṭṭān narrated to us, saying that Aḥmad b. Yaḥyā b. Zakariyyā al-Qaṭṭān narrated to him among others, saying that Bakr b. ʿAbd Allāh b. Ḥabīb narrated to him among others, saying that Tamīm b. Bahlūl narrated to him among others, saying that Abū Muʿāwiya al-Ḍarīr narrated to him among others, from Ismāʿīl b. Mihrān, who narrates: “I heard Jaʿfar b. Muḥammad عليه السلام say: “Whoever performs the ritual bath on its nights—in the month of Ramaḍān—will be absolved of his sins as like the newborn on the day his mother gave birth to him.” I said to him: “O’ son of the Messenger of Allāh صلى الله عليه وعلى آله وسلم! What are the nights of ritual bathing?” So he replied: “The seventeenth, nineteenth, twenty-first, and twenty-third nights of the month of Ramaḍān.” Ibn Mihrān continued his narration: “I said: “Is there a prayer to be performed in these nights different from those performed in the other nights of this month?,’ so he replied: “No, except for on the twenty-first and twenty-third nights—[because] hope is placed in these nights, that either of them is the true Night of Power, and it is recommended in each of the two nights to perform a hundred (units) of prayer—verily, whoever does that, Allāh will grant him absolution from Perdition and mandate upon him admission into Paradise, and he is allowed to intercede for (as many people as) the likes of (the tribes of) Rabīʿa and Muḍar (combined).”