مَا طَالِبٌ مُهْمِلًا
Translation: No student is negligent.
مَا: negative particle working like laysa.
طَالِبٌ: indefinite nominative ism mā.
مُهْمِلًا: accusative khabar mā.
Compare with the preceding example: mā governs both, although one ism is definite and the other indefinite.