مَعْرِفَةٍknowledge

Example sentences

• وَيَجِبُ أَنْ يَكُونُوا عَلَى مَعْرِفَةٍ بِهِ،

  And they must be knowledgeable about it.

  مَعْرِفَةٍ — knowledge. An indefinite noun 'knowledge / acquaintance', the object of the preposition before it, so it takes the genitive ending. With that preposition it builds the phrase 'having knowledge' — the state the people must be in. Its indefiniteness keeps it general, knowledge of the relevant matter.

  From: How the Companions Preserved Hadith →