Place mā before each masculine third-person active or passive form. The person and number remain the same.
FormActivePassive
Singularمَا فَعَلَ: he did not.مَا فُعِلَ: he was not acted upon.
Dualمَا فَعَلَا: those two did not.مَا فُعِلَا: those two were not acted upon.
Pluralمَا فَعَلُوا: they did not.مَا فُعِلُوا: they were not acted upon.
The ending ـوا remains in both negative plural forms. The active-passive distinction comes from the stem vowels, not the number suffix.