The Holy Quran Āli `Imrān (Family of Imran) - سورة آل عمران Chapter 3 Verse 67 Ibrahim (Abraham) was neither a Jew nor a Christian, but he was a true Muslim Hanifa (Islamic Monotheism - to worship none but Allah Alone) and he was not of Al-Mushrikun.
The Holy Quran An-Nisā' (The Women) - سورة النساء Chapter 4 Verse 125 And who can be better in religion than one who submits his face (himself) to Allah (i.e. follows Allah's Religion of Islamic Monotheism); and he is a Muhsin. And follows the religion of Ibrahim (Abraham) Hanifa (Islamic Monotheism - to worship none but Allah Alone). And Allah did take Ibrahim (Abraham) as a Khalil (an intimate friend).
Indeed, the first House [of worship] established for mankind was that at Makkah - blessed and a guidance for the worlds.
In it are clear signs [such as] the standing place of Abraham. And whoever enters it shall be safe. And [due] to Allah from the people is a pilgrimage to the House - for whoever is able to find thereto a way. But whoever disbelieves - then indeed, Allah is free from need of the worlds.
The Holy Quran
Al-Ĥaj (The Pilgrimage) - سورة الحج
Chapter 22 Verse 26, 27, 28, 29
And [mention, O Muhammad], when We designated for Abraham the site of the House, [saying], "Do not associate anything with Me and purify My House for those who perform Tawaf and those who stand [in prayer] and those who bow and prostrate.
And proclaim to the people the Hajj [pilgrimage]; they will come to you on foot and on every lean camel; they will come from every distant pass -
That they may witness benefits for themselves and mention the name of Allah on known days over what He has provided for them of [sacrificial] animals. So eat of them and feed the miserable and poor.
Then let them end their untidiness and fulfill their vows and perform Tawaf around the ancient House."