البارئ
(البارئ): اسمٌ من أسماء الله الحسنى، يدل على صفة (البَرْءِ)، وهو...
The foundations upon which something is established and without which it cannot be achieved.
"Arkān" (pillars) are the foundations and bases upon which something is built and without which it cannot be achieved, such as the pillars of Islam, which are: testifying that there is no deity worthy of worship but Allah and that Muhammad is the Messenger of Allah; offering (the five obligatory) prayers; giving Zakah (mandatory charity); fasting Ramadan; and making Hajj (pilgrimage) for those who can find a way thereto.
"Arkān" (sing. rukn), which means the foundation and strongest side of something. The "arkān" of a thing are its sides and foundations by which it is supported and upon which it is established. Other meanings: the mainstay and support of something, a part, a great issue.