(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. (ES)
Reference (ES): Sahih Muslim 2169 a (ES)
In-book reference (ES): Book 39, Hadith 21 (ES)
USC-MSA web (English) reference(deprecated numbering scheme): Book 26, Hadith 5393 (ES)