ન આવડે ભીખ તો વૈદું કરતાં શિખ.

na āvaḍē bhīkha tō vaiduṁ karatāṁ śikha.

Literally: If you do not know how to beg, learn to practice medicine.
What it means: Said in mockery of unqualified quack doctors who adopt the profession merely as an easy living when all else fails.

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.