"And Abram fell on his face: and God talked with him, saying," - Old Testament (Tanakh) (Genesis 17:3)
"And Moses made haste, and bowed his head toward the earth, and worshiped." - Old Testament (Tanakh Exodus 34:8 Mathew 26:39
"HE (Jesus) fell with his face to the ground and prayed"
"And Joshua fell on his face to the earth, and did worship..."-(JOSHUA 5:14)--obviously Jesus was not worshiping himself, he was worshiping God [source]
Quran conforms that salat was lost after some generations for the people of the book. Losing it involved changing it in every aspect. The salat as practiced today by most of the Jews and Christians is different than what was given to their prophets. Very few Jews and Christians have maintained the inherited Salat.
In his comment about these positions the author, To Pray As a Jew wrote : "In most contemporary congregations very few people keep to the tradition of falling prostrate. Sometimes it is only the Prayer leader and the rabbi who does so. In more traditional congregations, however, some worshipers, men and women, will join the Prayer Leader and rabbi in the act of prostrating themselves. In Israeli synagogues, the practice is more widespread than in synagogues elsewhere. Since this is a position that we are unaccustomed to, one who has never done this before might very well demur. But once accomplished, the experience provides such a spiritual uplift that one looks forward to repeating it. Those willing to try this ancient ritual form on the rare occasions that call for it might welcome the following diagrams of the correct procedure."
It is also interesting to learn from this book that the prayers of the Jews involve wash before the prayers, (like Wuduu or ablution for Muslims), and the call for Prayers (like the Azan for the Muslims).
See also: Hamerkaz >> Common Prayers and Blessings:And Buddhists too:
A berakhah (blessing) is a special kind of prayer that is very common in Judaism. Berakhot are recited both as part of the they all start with the word barukh (blessed or praised).
The words barukh and berakhah are both derived from the Hebrew root Bet-Resh-Kaf, meaning "knee," and refer to the practice of showing respect by bending the knee and bowing. See animation at right. There are several places in Jewish liturgy where this gesture is performed, most of them at a time when a berakhah is being recited.