(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." (RU)
Reference (RU): Sunan an-Nasa'i 725 (RU)
In-book reference (RU): Book 8, Hadith 38 (RU)
English translation (RU): Vol. 1, Book 8, Hadith 726 (RU)