where there is smoke there is fire
Definition:  if there are rumors or signs that something is true, it must be at least partly true
Usage:  he is denying that he stole from the state’s coffers, but where there is smoke there is fire

SEPEDI
Translation:  mo go lego muši go mollo
Proverb: mo go lego setopo re bona ka manong

XITSONGA
Translation:  laha ku nga na musi ku na ndzilo
Proverb: laha ku nga ni tinhongana ku borile xilo

TSHIVENḒA
Translation:  hune ha vha na vhutsi hu na mulilo
Proverb: a hu nukhi hu songo sina