Zulfiqar
No. The term Zulfiqar (ذو الفقار) is not a Quranic proper name. Its prominence comes from historical, hadith-related and later literary accounts linked to ʿAlī ibn Abī Tālib.
Yes, especially in Persianate and South Asian Muslim communities as a given name or as part of compound honorifics, though it remains relatively uncommon.
Historically it symbolizes martial valour, justice and association with ʿAlī, often carrying reverential or heroic connotations in literature and devotional contexts.
No formal religious ban exists, but because of its strong historical and symbolic associations some families reserve it as an honorific or surname element rather than a common given name.
In Arabic: ذُو الفِقَار ; in Urdu: ذوالفقار.