Correct

字据

/ zìjù /
Strokes

Definition

written pledge/contract/IOU

Example

As a Noun

written pledge (eg receipt, IOU, contract, etc)

1
Kǒushuōpíng
口说无凭
  
,
字据
  

Since verbal statements are no guarantee, a written agreement must be made.

2
Xiě
le
zhāng
字据

write an IOU/a receipt