MB3 113a: Drying Fruits on Shabbos (310:2-5)

Something owned by a non-Jew isn't subject to the rule of מיגו דאתקצאי לבין השמשות אתקצאי לכולי יומא. An item can't be muktzah for part of Shabbos. Muktzah status of a milah knife after the bris is over. Muktzah status of raw meat.