Ya Devi sarva bhuteshu maatru rupen sansthitha, namastasye, namastasye, namastasye namo namah.

~ excerpt from Durga Saptashati, Markandey Purana, Tantroktam Devi Suktam

Meaning:

The Divine Mother who dwells in all living beings in the form of mother, We bow down to that Mother again and again and again.