We say “Jai Maa Prabhu” because it is a sacred phrase through which all gods and goddesses can be remembered and worshipped together.

The word “Maa” represents all motherly divine powers—the collective form of all goddesses such as Maa Lakshmi, Maa Parvati, Maa Saraswati, and all other divine energies.

The word “Prabhu” represents the collective form of all gods—Lord Shiva, Lord Vishnu, Lord Ganesha, Lord Krishna, Lord Hanuman, and all other deities.

 Therefore, when we say “Jai Maa Prabhu,” it carries the भावना (spiritual meaning):
“Salutations and reverence to all goddesses and gods at once.