Etiquettes of Walking to Prayer

It is recommended to head to prayer while being pure and with humility, based on the saying of the Prophet (may Allah's peace and blessings be upon him): "When one of you performs ablution and does it well, then heads to the mosque, he must not intertwine his fingers for he is (virtually) engaged in prayer." One should say on leaving his house, even for a purpose other than the prayer: "Bismill¿h ¿mantu bill¿h i'tasamtu bill¿h tawakkaltu 'ala All¿h la hawla wa la quwwata ill¿ bill¿h. All¿humma inn¿ a'¿dhu bika an adilla aw udal, aw azilla aw uzal, aw azhlima aw uzhlam, aw ajhala aw yujhala 'alayy (In the Name of Allah, I believe in Allah, I seek the protection of Allah, I put my trust in Allah and there is no strength or power except with Allah.