Smak bin Hrb bin Aws سماك بن حرب بن أوس · The Book on Salat (Prayer)

The Mu'adh-dhin of Allah's Messenger would wait and he would not call the Iqamah until he saw the Allah's Messenger had come out, he would call the Iqamah when he saw him."

"Allah's Messenger would straighten our lines. One day he came out and saw a man whose chest was protruding from the people, so he said: 'You must straighten your lines, or Allah will cause disagreement to occur among your faces."

his father who said: "Allah's Messenger lead us in prayer and hold his left hand with his right."

"When Allah's Messenger would lead us in Salat he would turn (to leave) from both sides, on his right and on his left."

"For Zuhr and Asr, Allah's Messenger would recite: By the heavens, holding the Buruj and (By the heavens and At-Tariq) and similar to them."

"Allah's Messenger performed Salat on a Khumrah."

Allah's Messenger said: "When one of you placed something like the post (handle) of the camel saddle in front of him, then let him perform Salat and not concern himself with who passes beyond that."