Muslih
Muslih is the active participle from the Arabic root Ṣ-L-Ḥ, meaning 'reformer' or 'one who sets things right'.
The exact personal name 'Muslih' does not appear as a named person in the Quran, but the root Ṣ-L-Ḥ is used in Qur'anic vocabulary related to righteousness and reform.
Yes; the element appears in honorific and compound forms (for example, Muslih al-Din) across medieval Islamic scholarly and biographical literature, and the base form has occasional historical usage as a personal name.
Muslih is relatively rare but appropriate; it conveys ethical meaning ('reformer') and has classical Arabic roots, making it suitable for families who prefer meaningful, traditional names.
Variants include Musleh (regional pronunciation/spelling) and compound honorifics like Muslih al-Din; 'Al-Muslih' can be used as a nisba/epithet in historical contexts.