Bakara 40:

•  Ey İsrailoğulları, Size bağışladığım o nimetleri hatırlayın ve Bana verdiğiniz sözü tutun ki Ben de sözümü tutayım; ve Ben'den, yanlız Ben'den sakının (فَارْهَبُونِ).
  (
  Rehb için bkz.  67/Kasas: 32, not 40. Bu hatır­latma  Ümmet-i  Muhammed'e  bir  uyarıdır:  Siz  de size emanet edilen vahye Ümmet-i Musa'nın yaptığını yaparsanız,  Ben de  size onlara  davran­dığım  gibi  davranırım.MI
  
  
  
  R-He-B ر ه ب
  
  رَهْبٌ “ ” (rahb), “ رُهبٌْ ” (rohb), “ رَہَبٌ ” (rahab), “ٌ رُہبْۃَ ” (ruhbah), “ رَہْبَۃ ” (rahbah), “ رُہبْاَنٌ ” (ruhbaan). This root means a fear which has caution in it, like one is afraid of burning and that is why we fear fire. الَمْرَہْوُ ب“ ” (al-marhoob), “ الَرہَّ ب ” (ar-rahib): lion {T}. It also means to become weak.
  الَرہَّ ب“ ” (arrabu) “ اَلرُّہْبٰی ” (ar-ruhba) means a she-camel which is weak and tired after a journey. رَہِبَ الْجَمَلُ “ ” (rahibal jamal): camel rose or stood up but again sat down due to weakness {T}. الرَہَّبْانَيۃَِّ “ ” (ar-rahbaaniyyah): includes all elements such as fear, caution, weakness, etc. in monastic, i.e. due to the fear of God, giving up all the pleasures of life [“ اَلاْرَہْاَ ب ” (al-arhaab): birds who do not prey {T}] and thus become weak, this sort of puritan is called “ الَراَّہ ب ” (ar-raahib), its plural is “ ”رُہبْاَنٌ (ruhbaan) in 9:31. Some think that “ رُہبْاَنٌ ” (ruhbaan) is a Persian word, and it is a compound of the words “ْ رهُ ” (ruh) and “ باَن ” (baan) which means a puritan {T}. This could be a Persian word because they too used to practise monasticism.ELQ
  )