Mishnah — Seder Zeraim, Tractate Berakhot…
“ Man must not be light with his head (frivolous) near the eastern gate; It is near the foundation of the house of the holy of holies. One may not enter the holy mount with his staff, Or with his sandal, or with his belt-pouch, or with dust on his feet, And do not make a shortcut, And spitting is forbidden, as deduced from lesser to greater. ”
