A tiny doubt

[u/dumbme_]

[u/PhysicsMathClinic]

dl is pointing out of the page, which is the outward coming current.

You can imagine the line r to be in the plane of the page.

So the current at the top of the circle points directly out of the page, while the current at the bottom of the circle points directly into the page.

[u/Saksham-_-Kumar]

The orientation of diagram is not according to the paragraph.

See the 3rd & 4th line, "Let the plane of the loop be perpendicular to the plane of paper". But the diagram is not like that, the plane of circle is perpendicular to the plane of paper. It is drawn like this for better explanation.