(35) باب لاَ يَبْصُقْ عَنْ يَمِينِهِ، فِي الصَّلاَةِ
Narrated Anas:
The Prophet (ﷺ) said, "None of you should spit in front or on his right but he could spit either on his left or under his foot."
Reference: Sahih al-Bukhari 412
In-book reference: Book 8, Hadith 62
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 8, Hadith 404