Arabic or Sanskrit Resources?

Hello, beautiful and resourceful people.  Henry’s Nanny wants to get a tattoo for her birthday.  She wants a bible verse — possibly — or possibly just a couple of words: “justice” and “mercy,” I think.  The thing is, she wants them in either Arabic or Sanskrit.  I think this could be really beautiful, but we all know that getting a tattoo in a language that isn’t your first can go woefully awry.  Does anyone have any thoughts as to reliable resources so Miss April can be sure she’s not actually getting tats that read, “foolish white girl,” or something similar?

Thank you.