root: nun qaf ba http://corpus.quran.com/qurandictionary.jsp?root=nqb
5:12 God took the covenant of the Children of Israel and sent from them twelve naqīban, and God said, "I am with you if you hold the l-ṣalata, contribute towards betterment, acknowledge My messengers, support them, and give God a loan of righteousness; then I will cancel your sins and admit you into gardens with rivers flowing beneath." Whoever rejects after this from you, then he has strayed from the path.
50:36 How many a generation before them have We destroyed? They were stronger in power, and they had fanaqqabū the land. Did they find any sanctuary?