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Ei incumbit probatio qui dicit, non qui negat

Maxim
Evidence
Literal meaningThe proof lies on the one who asserts, not on the one who denies
Pronunciationay in-KUM-bit pro-BAH-tee-oh kwee DEE-kit non kwee NAY-gat

The party that claims something must prove it. The other side need not prove a negative.

Example

A claims that B owes him money. B simply denies. It is A who must prove the debt.

Case laws
  • Woolmington v. DPP (1935), House of Lords: in a murder trial the prosecution must prove the guilt of the accused. This is the golden thread of English criminal law.
Statutory link

Sections 101 and 102 of the Indian Evidence Act, 1872 (now in the Bharatiya Sakshya Adhiniyam).

Exceptions / limits

Where a fact is specially within the knowledge of one party, that party must prove it.

Exam tip

Asked as the base of the burden of proof.

Memory trick

Say it, prove it.

Key takeaway

The one who asserts a fact must prove it.

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