એક નવું તે બે નવાં, ત્રણે કાળા કેહેર;

ēka navuṁ tē bē navāṁ, traṇē kāḷā kēhēra;

Literally: One new thing, then two new things, and three are an absolute disaster;
What it means: Warns against taking on too many new, unfamiliar responsibilities or debts at once, as they quickly lead to ruin.

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.