How did a Delhi businessman use talcum powder to fund terrorism in Afghanistan?

ED has arrested Delhi-based businessman Harpreet Singh Talwar for using talcum powder shipments from Afghanistan to smuggle heroin into India. ED said ₹74 crore generated from the smuggling ring was transferred via hawala channels to Afghanistan and used to fund terror activities. Talwar allegedly conspired with a syndicate led by wanted accused Raju Dubai, with the involvement of Pakistan's ISI.