Books in Arabic and about Arabic are found in call number range PJ6001-8517. However, some Arabic titles are found in other parts of the library, so it is a good idea to search the catalog or ask a librarian for help.
Use advanced search in Bobcat to find resources in the Arabic language. You can search using Arabic text or transliteration.
If you aren't finding enough, expand your search to All Collections to include NYU Bobst library or use Worldcat.org to find items from other libraries that you can borrow via NYU EZBorrow or Inter Library Loan.