<prompt> Grievous hu deals underSection 304Section 310Section 320Section 357  <response>: Injuries are grievous, Those that endangers life Those that cause severe bodily pain for 20 days. Those that disable the sufferer from following his ordinary pursuits for 20 days. Ref: TEXTBOOK OF FORENSIC MEDICINE AND TOXICOLOGY KRISHNAN VIJ FIFTH EDITION PAGE 209 