Ní fiú scéal gan údar.

There's no worth to a story without an author.

Note: This seanfhocal is an admonition not to accept anonymous gossip. If the original source of the "information" is not willing to reveal himself/herself, perhaps it's because the alleged "facts" are fictious.

Note also: The word "Ní" which begins this seanfhocal is the negative form of the verb "Is". This is the second form of the verb 'to be', the other form being "Tá" and its variants.