Many people question about asking help other than Allah Almighty , & that according to them it is mentioned in Quran to ask for help from Allah Alone and not from Aulia Allah etc . For them the following article about that particular ayat and its tafseer and its analysis is shared.After reading this it will be clear that that particular ayat was for non-muslims, (that some sects try to impose on Muslims) , and Quran doesn't prohibits from asking the Aulia Allah for dua etc . They are the friends of Allah and due to their piety,love , and struggle to get close to Allah , He listens to them and accepts their requests .
Article source : Makashfa
Article source : Makashfa