Is it "legal" to ask user to open iAd?

I am currently making an iOS app who's only income source relies on iAds. Will my app get rejected if I tell the user in my about page that he can support me by tapping on an iAd? I wouldn't prompt or alert him about it, I would only inform him that it would support me. Actually, many of those gift card apps give you credits if you tap on an ad or watch a video.

I can't find anything in the guidelines that explicitly forbids this.

7.1 Apps that artificially increase the number of impressions or click-throughs of ads will be rejected

This point only refers to hacking the framework to generate fake clicks, right?

Thanks in advance!

(I asked this question on Stack Overflow but it was on hold because it was not about coding, is this the right forum for a question like this?)