થોડા સો મીઠા, વ્હેત સો ખટ્ટા.

thōḍā sō mīṭhā, vhēta sō khaṭṭā.

Literally: A little is sweet, a span is sour.
What it means: Things are pleasant and manageable in small quantities, but become troublesome and bitter when they exceed limits.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1921) · 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.