Doctorines of islam 1)Believe God is one ""(mark6:4 mark 12:28)
2)Praying to God bow down (nehemiah 8:4-6 joshua 5:15 mattew 26:39 number 20:6 genesis 17:3)
3)fasting in the holy month Fasting in 9month (Jeremiah 36:9)
4)alms giving
5)Going to mecca (isaiah 2:2)

Nehemiah 8 v4-6

4 And Ezra the scribe stood upon a pulpit of wood, which they had made for the purpose; and beside him stood Mattithiah, and Shema, and Anaiah, and Urijah, and Hilkiah, and Maaseiah, on his right hand; and on his left hand, Pedaiah, and Mishael, and Malchiah, and Hashum, and Hashbadana, Zechariah, and Meshullam.

5 And Ezra opened the book in the sight of all the people; (for he was above all the people and when he opened it, all the people stood up:

6 And Ezra blessed the Lord, the great God. And all the people answered, Amen, Amen, with lifting up their hands: and they bowed their heads, and worshipped the Lord with their faces to the ground.

Joshua 5 v15
The commander of the LORD's army replied, "Take off your sandals, for the place where you are standing is holy." And Joshua did so.

Matthew 26:39

39 Going a little farther, he fell with his face to the ground and prayed, “My Father, if it is possible, may this cup be taken from me. Yet not as I will, but as you will.”

Numbers 20 v6
Moses and Aaron went from the assembly to the entrance to the tent of meeting and fell facedown, and the glory of the LORD appeared to them

Genesis 17 v 3
Abram fell facedown, and God said to him

Jeremiah 36 v 9
In the ninth month of the fifth year of Jehoiakim son of Josiah king of Judah, a time of fasting before the LORD was proclaimed for all the people in Jerusalem and those who had come from the towns of Judah.
Isaiah 2v 2
In the last days the mountain of the LORD's temple will be established as the highest of the mountains; it will be exalted above the hills, and all nations will stream to it.
Jazakhallaah Khair. May Allah Increase You In Knowledge and Wisdom

Bigbang2013:
Doctorines of islam 1)Believe God is one ""(mark6:4 mark 12:28)
2)Praying to God bow down (nehemiah 8:4-6 joshua 5:15 mattew 26:39 number 20:6 genesis 17:3)
3)fasting in the holy month Fasting in 9month (Jeremiah 36:9)
4)alms giving
5)Going to mecca (isaiah 2:2)

1. Who say God is not one? Christians believe also in ONE God, this God has 3 personalities, just as a man has 3 personalities, body,soul and spirit. Genesis 1: 27 Let US create man in OUR IMAGE...the "us" and "our" indicate more than one personality and the "image" indicate, ONE essence. If God is 3 the verse should have say "IMAGES" can you explained the uses of the term "WE" and "US" in the quran?
2did the prophet you mention pray toward mecca? During the time of Joshua, ezra nahimiah is the kabba still a place of worshiping Allah? Provide evidence please!!!

This is the truth, God exist in more than ONE dimension and he is not restricted to space or time, when ever you face and prayed, God will hear you. Christians don't have specific place to face, you can face any were to pray.