صَحِيحُ مُسْلِمٍ
Sahih Muslim 554 a
The Book of Mosques and Places of Prayer
The prohibition of spitting in the masjid, during prayer and at other times. The prohibition of a praying person spitting in front of him or to his right
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ الْعَنْبَرِيُّ، حَدَّثَنَا أَبِي، حَدَّثَنَا كَهْمَسٌ، عَنْ يَزِيدَ بْنِ عَبْدِ اللَّهِ بْنِ الشِّخِّيرِ، عَنْ أَبِيهِ، قَالَ صَلَّيْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَرَأَيْتُهُ تَنَخَّعَ فَدَلَكَهَا بِنَعْلِهِ .
Abdullah b. Shakhkhir reported on the authority of his father that he said: I said prayer with the Messenger of Allah (ﷺ) and saw him spitting and rubbing it off with his shoe.
Sahih Muslim, 554 aSahihصحيح