Where does “ذ” come from?

ذ (Persian) comes from Arabic ذ, from Arabic د, from Arabic اِسْتَخْدَمَ — to use, hire.

Ancestry of “ذ”, step by step

StepLanguageWordMeaning
1Arabicذ—
2Arabicد—
3Arabicاِسْتَخْدَمَto use, hire
Every word from Arabic اِسْتَخْدَمَ →Every word from Arabic د →Every word from Arabic ذ →