Green Tara Mantra

Transliteration

oṃ tā re tu ttā re tu re svā hā

oṃ tāre tuttāre ture svāhā

Notes on the Tārā mantra

Tāre is the feminine vocative of Tārā's name and is therefore a call to her by name: "Oh Tārā!". Tu can mean "to be strong, or to have authority; to make strong or efficient; to be able; or it can mean pray!, I beg, do, now, then"; and is also sometimes used as an expletive. So Tuttāre could be "Oh Tārā be strong", or "Oh Strong Tārā". There is a Sanskrit word tura which means "quick, willing, prompt", and ture would be that word in the feminine vocative: Oh (she who is) quick, willing etc., which would fit the mythology of Tārā.
A traditional explanation of the mantra is that tāre represents deliverance from mundane suffering; while tuttāre represents deliverance into the spiritual path conceived in terms of individual salvation; and finally ture represents the culmination of the spiritual path in terms of deliverance into the altruistic path of universal salvation.