What are the 4 rules of Tanween?

Understanding the Four Rules of Tanween

To accurately articulate Noon Saakin and Tanween alongside other letters, Tajweed specifies four rules: Izhar, Idgham, Iqlab, and Ikhfaa. The Izhar rule emphasizes the pronunciation of Noon Saakin or Tanween when they precede certain throat letters. Conversely, the Idgham rule involves the integration of Noon Saakin or Tanween with specific letters, which may occur either with or without the ghunna.