(32) باب ذِكْرِ نَهْىِ النَّبِيِّ صلى الله عليه وسلم عَنْ أَنْ يَبْصُقَ الرَّجُلُ بَيْنَ يَدَيْهِ أَوْ عَنْ يَمِينِهِ وَهُوَ فِي صَلاَتِهِ
It was narrated from Abu Sa'eed Al-Khudri that the Prophet (ﷺ) saw some spittle in the Qiblah of the Masjid. He scratched it off with a pebble and forbade a man to spit to his front or to his right. He said:
"Let him spit to his left or beneath his left foot." (ID)
Reference (ID): Sunan an-Nasa'i 725 (ID)
In-book reference (ID): Book 8, Hadith 38 (ID)
English translation (ID): Vol. 1, Book 8, Hadith 726 (ID)