question #3 Sahih al-Bukhari 6080, Book 78, Hadith 108 : What significance does the act of praying on a mat sprinkled with water hold in Islamic tradition?

Allah’s Messenger (ﷺ) visited a household among the Ansars, and he took a meal with them. When he
intended to leave, he asked for a place in that house for him, to pray so a mat sprinkled with water was
put and he offered prayer over it, and invoked for Allah’s Blessing upon them (his hosts).