ડુંગર વીઆણો તે ઉંદર નીકળ્યો.

ḍuṁgara vīāṇō tē uṁdara nīkaḷyō.

Literally: The mountain went into labor and a mouse came out.
What it means: Grand expectations and massive efforts led to a ridiculously trivial result.

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.