(23) باب عَرَقِ النَّبِيِّ صلى الله عليه وسلم فِي الْبَرْدِ وَحِينَ يَأْتِيهِ الْوَحْىُ .
'Ubida b. Samit reported that when wahi (inspiration) descended upon Allah's Messenger (ﷺ), he felt a burden on that account and the colour of his face underwent a change.
Reference: Sahih Muslim 2334
In-book reference: Book 43, Hadith 118
USC-MSA web (English) reference(deprecated numbering scheme): Book 30, Hadith 5766