Sufia are not grave worshippers and all salaf used to see,meet,ask,even learn and recited quran from Prophet(pbuh) in Kash and Dream, go and read history you will hundreds.
asking dead people for help is not same as worshiping them then i wonder what it is? also, why don't you teach me the history and show me some evidences? how does seeing the Rasoul of Allah (sal-allahu 'alayhi wa salam) in dreams is same as talking to his soul and talking to dead people's souls? It is strange that plenty of classical scholars made such a big mistake, when they should have simply talk to Allah's Rasoul's (sal-allahu 'alayhi wa salam) soul and learned everything from him instead of wasting time to go through the books, spend time on deducing the correct ruling etc!
you don't even realize that this heretic is preaching the kufr and you're here spreading it. may Allah Ta'ala save us from such dajjal and kadaab people, ameen!