There is no smoke without fire
A rumour usually has some basis in fact.
English
There is no smoke without fire
Tiếng Việt
Không có lửa làm sao có khói.
Tin đồn thường có phần sự thật.
Ví dụ
- She did not believe all of it, but there is no smoke without fire.
- The board looked into the claim on the principle that there is no smoke without fire.