Ibn ‘Abbas reported God’s Messenger as saying, “When one of you prays without a sutra, an ass, a pig, a Jew, a Magian, and a woman cut off his prayer, but it will suffice if they pass in front of him at a distance of over a stone’s throw.”
Ka‘b al-Ahbar said, “If one who passes in front of a man who is praying knew what was laid to his charge, it would be better for him to be swallowed up by the earth than to pass in front of him.” A version has “less serious for him.”
Narrated Abu Huraira said that a man entered the mosque when God’s Messenger was sitting in it and prayed. He then came and said, “Peace be upon you,” and God’s Messenger replied, “And upon you be peace. Go back and pray, for you have not prayed.” He returned and prayed, then came and said, “Peace be upon yo:
“When you get up to pray perform the ablution perfectly, then face the qibla and say, “God is most great.” Then recite a convenient portion of the Qur’an; then bow and remain quietly in that attitude; then raise yourself and stand erect; then prostrate yourself and remain quietly in that attitude; then raise yourself and sit quietly; then prostrate yourself and remain quietly in that attitude; then raise yourself and sit quietly.” A version has, “Then raise yourself and stand erect; then do that throughout all your prayer.”
Abu Huraira reported God’s Messenger as saying, “If one of you knew what he incurred by passing in front of his brother and interfering with his prayer, it would be better for him to stop a hundred years than to take a single step.”