Is it permissible to use images of the Mushaf and other Islamic symbols from the internet in a design, with modification and without mentioning the source? And is it permissible to include images of prayer beads (masbaha) despite them not being mentioned in the Prophetic Sunnah?

If the owner of an image stipulates that its source must be mentioned when quoting or displaying it, then it is not permissible to use it without mentioning the source, in observance of intellectual property rights and academic honesty. Adding to or modifying a quoted image does not make it permissible to omit mentioning the source, as long as the original image remains identifiable. As for placing images of the rosary in designs, it is permissible, as there is no harm in using them.