(37) باب كَفَّارَةِ الْبُزَاقِ فِي الْمَسْجِدِ
Narrated Anas bin Malik:
The Prophet (ﷺ) said, "Spitting in the mosque is a sin and its expiation is to bury it." (ID)
Reference (ID): Sahih al-Bukhari 415 (ID)
In-book reference (ID): Book 8, Hadith 65 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 8, Hadith 407 (ID)