Wherever the causing of a certain effect, or an attempt to cause that effect, by an act or by an omission, is an offence, it is to be understood that the causing of that effect partly by an act and partly by an omission is the same offence.
A intentionally causes Z's death, partly by illegally omitting to give Z food, and party by beating Z. A has committed murder.
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 35 When such an act is criminal by reason of its being done with a criminal knowledge or 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
Section 43 Illegal Legally bound to do