What you have committed was shirk and you should dispose of all that relates to that and repent and ask Allah for forgiveness.

My mother in law took me to nizamuddin delhi and ajmer sharif(khawaja gareeb nawaz) and tara garh in ajmer. There we prayed for our hajats and tied small threads and kept niyaz..By Allah’s will our desires were fulfilled.nw i hv come to knw all this is a major sin.i asked Allah for forgiveness and made a vouch nvr to visit astaans. I m in dilemma wat to do wid niyaz i had kept there…