Actions while Praying

Bukhari :: Book 2 :: Volume 22 :: Hadith 305

Narrated Anas:

The Prophet said, "Whenever anyone of you is in prayer, he is speaking in private to his Lord and so he should neither spit in front of him nor on his right side but to his left side under his left foot."

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star