Q. Since we are to avoid making nedarim and oaths, can someone sign a document that ends with the following statement?
“I solemnly declare that the foregoing statements are to the best of my knowledge and belief true, and I make this solemn declaration conscientiously believing it to be true and knowing that it is of the same force and effect as if made under oath.”

A. Horav Shlomo Miller’s Shlit’a opinion is that signing this document may not be tantamount to uttering an oath at all. One may also add the abbreviation bl’n (beli neder) before the signature.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a