On the undersides of the arcs above the niches there' a stroke with largeer and smaller squares.[br]On the [b]large squares[/b] you can read the name of [i]Muhammad[/i] in the middle and fout times the text [i]al hamdu lilahi[/i] (God be praised). [br]On the [b]small squares[/b] you can read four times the name of [i]Muhammad[/i]. [br]So in kufic writing one can write the name of [i]Mohammed [/i]as well inside of an elongated frame as one, two or four times inside a square.