law: Sale of Goods Act, 1930
  50. Right of stoppage in transit
  Subject to the provisions of this Act, when the buyer of goods
  
  becomes insolvent, the unpaid seller who has parted with the possession of the
  
  goods has the right of stopping them in transit, that is to say, he may resume
  
  possession of the goods as long as they are in the course of transit, and may
  
  retain them until payment or tender of the price.