મોઢે ટઢવું કહે, વાંસે કાંઈ બોલે નહીં;

mōḍhē ṭaḍhavuṁ kahē, vāṁsē kāṁī bōlē nahīṁ;

Literally: He says cold things to the face, he does not speak anything behind the back.
What it means: A person who is honest and consistent in their speech is trustworthy.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.