દેતે સો લેતે નહીં, કરતે હય ઇનકાર;

dētē sō lētē nahīṁ, karatē haya inakāra;

Literally: They do not take when given, they refuse;
What it means: People often reject things when offered freely, only to regret it and find them unavailable when they actually want them.

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.