A person is said to cause an effect "voluntarily" when he causes it by means whereby he intended to cause it, or by means which, at the time of employing those means, he knew or had reason to believe to be likely to cause it.
Illustration
A sets fire, by night, to an inhabited house in a large town, for the
purpose of facilitating a robbery and thus causes the death of a person.
Here, A may not have intended to cause death; and may even be sorry that
death has been caused by his act; yet, if he knew that he was likely to
cause death, he has caused death voluntarily.
Section 27 Property in possession of wife, clerk or servant
Section 32 Words referring to acts include illegal omissions
Section 34 Acts done by several persons in furtherance of common intention
Section 36 Effect caused partly by act and partly by omission
Section 37 Co-operation by doing one of several acts constituting an offence
Section 38 Persons concerned in criminal act may be guilty of different offences