So maybe it has elements of that, or maybe this is just independently developed. But there definitely are parts of the Guru Granth Sahib which seem to have elements that are close to Islam. This is a quote from Guru Nanak. He is Allah, the unknowable, the inaccessible, all-powerful and merciful creator. So one argument is he's using the Arabic word for God. He's using Allah. Now another argument, counterargument, would be, well, he's just using the language that his followers knew, and many of his followers were Muslim, and so would have used the word Allah for God.