Complex sentence: The tantrik captures Bangarraju's soul and gives a few threads to Sampath, Rudraraju's grandson, telling him to tie them to the hands of every member of Bangarraju's family to keep his soul from communicating with them.
Split into simpler sentences: The tantrik captures Bangarraju's soul and gives a few threads to Rudraraju's grandson Sampath. He instructs him to tie those to the hands of every member of Bangarraju's family which shall prevent his soul to communicate with them.