હુબસીની મૂછ પકડી તે પકડી.

hubasīnī mūcha pakaḍī tē pakaḍī.

Literally: Once you grab an Abyssinian's mustache, you have grabbed it.
What it means: Said of an obstinate person who, once they take a stand or make a decision, refuses to let go under any circumstance.

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.