bli neder

Etymology
From.

Adverb

 * 1) A qualification of an undertaking to do something, such that the commitment does not include the strength of a vow.
 * I will do this bli neder.

Usage notes
In Jewish law, a vow has serious and weighty consequences (Numbers 30). Qualifying a commitment to perform a certain action with the term bli neder exempts the speaker from the violation of a vow in the event that he does not fulfill his commitment.