(13) باب النَّهْىِ عَنِ الْبُصَاقِ، فِي الْمَسْجِدِ فِي الصَّلاَةِ وَغَيْرِهَا
Ibn Umar reported that the Messenger of Allah (ﷺ) saw sputum sticking to the Qibla wall of the mosque, the rest of the hadith is the same. (DE)
Reference (DE): Sahih Muslim 547 b (DE)
In-book reference (DE): Book 5, Hadith 62 (DE)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1117 (DE)