સૌ સુવાવડ ને એક કસુવાવડ.

sau suvāvaḍa nē ēka kasuvāvaḍa.

Literally: A hundred successful childbirths on one side, and one miscarriage on the other.
What it means: A single failure can erase the memory of many past successes.

Also said as

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.