Re: Is this true?
Well, you do realize that to make something a part of aqeedah you need mutawaatir Hadith. This is if you follow the maturidi aqeedah that is
Istigatha just does not have those.
You would have to be a Athari, what Salafis are, if you want to use a khar Al-'ahaad for aqeedah like the one you claim says is for istigathaa.