Elul 15 - Sh'ma Koleinu

Merciful Father Hear our voice, Adonoy, our God; spare us and have compassion on us, and accept our prayers compassionately and willingly,

for You are Almighty Who hears prayers and supplications; and from Your Presence, our King, do not turn us away empty-handed, be gracious and answer us and hear our prayer

Hear our voice, Adonoy, our God; spare us and have compassion on us, and accept our prayers mercifully and willingly. Lead us back to You, Adonoy and we shall find the way back; renew our days as of old.

Cast us not away from Your Presence, and Your holy spirit take not from us.

Do not cast us off in time of old age, when our strength fails, do not forsake us.

Forsake us not, Adonoy, our God, be not far removed from us.

If you wish to fast, you must make a commitment to do so on the preceding day, during the Shemoneh esrei of Minchah. In the berachah Shema koleinu, you should mentally accept upon yourself, to fast and before saying Yiheyu leratzon, you should say, Master of the universe, I come before You to accept a fast etc. (as it is written in the siddur.)