Nāfiʿ
Yes. Nāfiʿ is attested in early Islamic biographical and hadith transmission records, most famously Nāfiʿ al-Madanī, a known transmitter.
It comes from the Arabic root ن-ف-ع and means 'beneficial', 'useful', or 'one who brings benefit'.
Some historical figures named Nāfiʿ are associated with early generations and transmitters; the most cited Nāfiʿ figures are transmitters in Medina rather than among the immediate Sahaba lists.
Yes. The word has a clear positive meaning and is used by families familiar with Arabic lexical names and scholarly lineages; it fits Urdu-speaking Muslim naming practices.
The adjective نافع appears in various contexts in Arabic literature, but there is no specific verse that uses Nāfiʿ as a proper-name person.