The error is produced by the XHTML validation. Disabling it will let you save your posts as usual. However, it will make your site a bit insecure. You can find more info here: http://b2evolution.net/man/group-properties-blogging

What version of b2evolution are you working with? Why do use CKE editor? Where did you get it? What version?

I'm not want disabling this rule I search option for clean or add one rules…

I use last version 6.8.2 and and write article form back-office

Well, but I wonder how do you get that fragment of html code: data-cke-saved-href. It's usually added by a WYSYWYG editor named CKE, which is not the one that we use in b2evolution (TinyMCE).

So, did you copy/paste that text from somewhere else?