The Statement of Allah the Exalted: "...O you who believe! Enter not the Prophet's houses, except when leave is given to you for a meal... (up to) ... Verily! With Allah that shall be an enormity." (V.33:53)
Narrated `Umar:I said, "O Allah's Messenger (ﷺ)! Good and bad persons enter upon you, so I suggest that you order the mothers of the Believers (i.e. your wives) to observe veils." Then Allah revealed the Verses of Al- Hijab.
Reference
Sahih al-Bukhari 4790
In-book reference
Book 65, Hadith 312
USC-MSA web (English)
Vol. 6, Book 60, Hadith 313
Translation by Dr. M. Muhsin Khan · Language: EN
Sahih
Arabic Text
حَدَّثَنَا مُسَدَّدٌ، عَنْ يَحْيَى، عَنْ حُمَيْدٍ، عَنْ أَنَسٍ، قَالَ قَالَ عُمَرُ ـ رضى الله عنه ـ قُلْتُ يَا رَسُولَ اللَّهِ، يَدْخُلُ عَلَيْكَ الْبَرُّ وَالْفَاجِرُ، فَلَوْ أَمَرْتَ أُمَّهَاتِ الْمُؤْمِنِينَ بِالْحِجَابِ، فَأَنْزَلَ اللَّهُ آيَةَ الْحِجَابِ.