RTO India — selling my bike but buyer not registered on his own name

Address:

Mumbai City, Maharashtra

Dear sir,
I have selling my bike s but buyer not register in his own name
Almost 1 year has gone, many time i had requested but still yet not registered

I shantanu mohapatra. Had sold my bike to one sagree ahmed, and it has been nearly a year he ha not registered on his name, always postponing, giving false pretext every time, if any problem arises we are not at all responsible for his crime, and all traffic fines challenge directed to the owner is not responsible for it, details of vehicle-mh02cs7454, passion pro, model 2012, chasis no-62556engine no-251465