Sahih al-Bukhari 286
Sahih al-Bukhari · Book 5: Bathing (Ghusl) · A Junub can stay at home without taking a bath but with ablution
Narrated Abu Salama:
حَدَّثَنَا أَبُو نُعَيْمٍ ، قَالَ حَدَّثَنَا هِشَامٌ ، وَشَيْبَانُ ، عَنْ يَحْيَى ، عَنْ أَبِي سَلَمَةَ ، قَالَ سَأَلْتُ عَائِشَةَ أَكَانَ النَّبِيُّ صلى الله عليه وسلم يَرْقُدُ وَهْوَ جُنُبٌ قَالَتْ نَعَمْ وَيَتَوَضَّأُ.
I asked `Aisha "Did the Prophet (ﷺ) use to sleep while he was Junub?" She replied, "Yes, but he used to perform ablution (before going to bed).