(6) باب جَوَازِ جَعْلِ الإِذْنِ رَفْعَ حِجَابٍ أَوْ نَحْوَهُ مِنَ الْعَلاَمَاتِ
Ibn Mas'ud reported:
The Messenger of Allah (ﷺ) said to me: The sign that you have been permitted to come in is that the curtain is raised or that you hear me speaking quietly until I forbid you. (IT)
Reference (IT): Sahih Muslim 2169 a (IT)
In-book reference (IT): Book 39, Hadith 21 (IT)
USC-MSA web (English) reference(deprecated numbering scheme): Book 26, Hadith 5393 (IT)