question #1 Sahih al-Bukhari 413, Book 8, Hadith 63 : What is the significance of maintaining cleanliness and etiquette during prayer in Islam?

The Prophet (ﷺ) said, “A faithful believer while in prayer is speaking in private to his Lord, so he should
neither spit in front of him nor to his right side but he could spit either on his left or under his foot.”