IPC Sections
IPC Section 387 : Putting person in fear of death or of grievous hurt, in order to commit extortion
Whoever in order to the committing of extortion, puts or attempts to put any person in fear of death or of grievous hurt to that person or to any other, shall be punished with imprisonment of either description for a term which may extend to seven years, and shall also be liable to fine.
IPC Section 388 : Extortion by threat of accusation of an offence punishable with death or imprisonment for life, etc
Whoever commits extortion by putting any person in fear of an accusation against that person or any other, of having committed or attempted to commit any offence punishable with death, or with imprisonment for life, or with imprisonment for a term which may extend to ten years, or of having attempted to induce any other person to commit such offence, shall shall be punished with imprisonment of either description for a term which may extend to ten years, and shall also be liable to fine; and, if the offence be one punishable under section 377 of this Code, may be punished with imprisonment for life.
IPC Section 389 : Putting person in fear or accusation of offence, in order to commit extortion
Whoever, in order to the committing of extortion, puts or attempts to put any person in fear of an accusation, against that person or any other, of having committed, or attempted to commit, an offence punishable with death or with imprisonment for life, or with imprisonment for a term which may extend to ten years, shall be punished with imprisonment of either description for a term which may extend to ten years, and shall also be liable to fine; and, if the offence be punishable under section 377 of this Code, may be punished with imprisonment for life.
IPC Section 390 : Robbery
In all robbery there is either theft or extortion.
 
When theft is robbery – Theft is “robbery” if, in order to the committing of the theft, or in committing the theft, or in carrying away or attempting to carry away property obtained by the theft, the offender, for that end, voluntarily causes or attempts to cause to any person death or hurt or wrongful restraint, or fear of instant death or of instant hurt, or of instant wrongful restraint.
 
When extortion is robbery – Extortion is “robbery” if the offender, at the time of committing the extortion, is in the presence of the person put in fear, and commits the extortion by putting that person in fear of instant death, of instant hurt, or of instant wrongful restraint to that person or to some other person, and, by so putting in fear, induces the person, so put in fear then and there to deliver up the thing extorted.
 
 
Explanations : 
 
  i) The offender is said to be present if he is sufficiently near to put the other person in fear of instant death, of instant hurt, or of instant wrongful restraint.
 
 
Illustrations :
 
  a) A holds Z down, and fraudulently takes Z’ money and jewels from Z’ clothes, without Z’ consent. Here A has committed theft, and, in order to the committing of that theft, has voluntarily caused wrongful restraint to Z. A has therefore committed robbery.
 
  b) A meets Z on the high road, shows a pistol, and demands Z’ purse. Z, in consequence, surrenders his purse. Here A has extorted the purse from Z by putting him in fear of instant hurt, and being at the time of committing the extortion in his presence. A has therefore committed robbery.
 
  c) A meets Z and Z’ child on the high road. A takes the child, and threatens to filing it down a precipice, unless Z delivers his purse. Z, in consequence, delivers his purse. Here A has extorted the purse from Z, by causing Z to be in fear of instant hurt to the child who is there present. A has therefore committed robbery on Z.
 
  d) A obtains property from Z by saying- “Your child is in the hands of my gang, and will be put to death unless you send us ten thousand rupees”. This is extortion, and punishable as such: but it is not robbery, unless Z is put in fear of the instant death of his child.
IPC Section 391 : Dacoity
When five or more persons conjointly commit or attempt to commit a robbery, or where the whole number of persons conjointly committing or attempting to commit a robbery, and persons present and aiding such commission or attempt, amount to five or more, every person so committing, attempting or aiding, is said to commit “dacoity”.
IPC Section 392 : Punishment for robbery
Whoever commits robbery shall be punished with rigorous imprisonment for a term which may extend to ten years, and shall also be liable to fine; and, if the robbery be committed on the highway between sunset and sunrise, the imprisonment may be extended to fourteen years.
IPC Section 393 : Attempt to commit robbery
Whoever attempts to commit robbery shall be punished with rigorous imprisonment for a term which may extend to seven years, and shall also be liable to fine.
IPC Section 394 : Voluntarily causing hurt in committing robbery
If any person, in committing or in attempting to commit robbery, voluntarily causes hurt, such person, and any other person jointly concerned in committing or attempting to commit such robbery, shall be punished with imprisonment for life, or with rigorous imprisonment for a term which may extend to ten years, and shall also be liable to fine.
IPC Section 395 : Punishment for dacoity
Whoever commits dacoity shall be punished with imprisonment for life, or with rigorous imprisonment for a term which may extend to ten years, and shall also be liable to fine.
IPC Section 396 : Dacoity with murder
If any one of five or more persons, who are conjointly committing dacoity, commits murder in so committing dacoity, every one of those persons shall be punished with death, or imprisonment for life, or rigorous imprisonment for a term which may extend to ten years, and shall also be liable to fine.