Rash judgement.

Don't do it.
Here is the prayer before the priest communion on the venerable Latin rite:

Let not the partaking of Thy Body, O Lord, Jesus Christ, which I, though unworthy, make bold to receive, turn to my judgement and condemnation, but by reason of Thy loving kindness, may it be to me a safeguard of both soul and body, and an effective remedy. Who livest and reignest with God the Father in the union of the Holy Ghost, God, world without end. Amen

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