And if We had made it a Quran in a foreign tongue, they surely would have said, Why not its verses have been made clear? What, a book in foreign tongue and the Prophet Arabian. Say you, 'that is a guidance and a cure for the believers.' And those who believe not, in their ears is a plug and to them it is a blindness. They are like those. Who are called from a far off place.[41:44]
It is narrated on the authority of ('Abdullah) son of Umar (may Allah be pleased with them) that the Holy Prophet (may peace of Allah be upon him) said: (The superstructure of) al-Islam is raised on five (pillars), i. e. the oneness of Allah, the establishment of prayer, payment of Zakat, the, fast of Ramadan, Pilgrimage (to Mecca).