નાનામાંથી મોટું થાય.

nānāmāṁthī mōṭuṁ thāya.

Literally: From small things come big things.
What it means: Great achievements or major developments always originate from modest beginnings.

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.