And I say: If it is established in the sunnah that the imam may sometimes recite aloud in a silent prayer for the purpose of teaching—as recorded in the two Sahihs and elsewhere—that the Prophet ﷺ would make a verse audible to them during the Dhuhr and Asr prayers—this is cited in Sahih Sunan Abi Dawud (763)—and if it is authentically reported from Umar (may Allah be pleased with him) that he would make the opening supplication audible to them: “Glory be to You, O Allah …,” as al-Aswad ibn Yazid said: “He would make us hear it and teach us”—this is cited in al-Irwa’ (2/48–49)—

I say: If this is permissible, then it is all the more permissible to raise one’s voice in remembrance after the prayer for the same purpose: teaching. This is clear, and all praise is due to Allah.

3161—“Set her free, for she is a believer.” That is, the slave-girl who testified that Allah is in heaven.

1—Reported by Abu Dawud (3/588/3283), al-Nasa’i (2/129), al-Darimi (2/187), Ibn Hibban in his Sahih (6/256/4296), al-Bayhaqi in al-Sunan (7/388), Ahmad (4/222, 388, and 389), al-Bazzar in his Musnad (1/29/38—al-Kashf), and al-Tabarani (7/383/7257), through Hammad ibn Salamah, from Muhammad ibn Amr, from Abu Salamah, from al-Sharid ibn Suwayd al-Thaqafi, who said:

I said: “O Messenger of Allah, my mother instructed me in her will to emancipate a slave on her behalf, and I have a black Nubian slave-girl.” The Messenger of Allah ﷺ said: “Call her.” He then asked: “Who is your Lord?” She replied: “Allah.” He asked: “And who am I?” She replied: “The Messenger of Allah.” He then ... mentioned it.