2. Ṣalāh (Prayer)

٢۔ كِتَابُ الصَّلَاةِ

2.269 [Machine] The Spitting in the Mosque.

٢۔٢٦٩ الْبُزَاقُ فِي الْمَسْجِدِ

nasai-kubra:804Qutaybah b. Saʿīd > Abū ʿAwānah > Qatādah > Anas

The Messenger of Allah ﷺ said: Spitting in the mosque is a sin and it is expiated by burying the spittle. (Using translation from Abū Dāʾūd 475)  

الكبرى للنسائي:٨٠٤أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ قَتَادَةَ عَنْ أَنَسٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «الْبُزَاقُ فِي الْمَسْجِدِ خَطِيئَةُ وَكَفَّارَتُهَا دَفْنُهَا»