They (some Companions of the Holy Prophet) were conversing with one another in the presence of the Messenger of Allah (ﷺ) (during his last) illness. Umm Salama and Umm Habiba made a mention of the church and then (the hadith was) narrated.
Reference: Sahih Muslim 528 b In-book : Book 5, Hadith 22 USC-MSA web (English) : Book 4, Hadith 1077 (deprecated)
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