Question
  Assalaamu
  alaikum.   Is there any difference in the letters of tafkheem
  or all are the same ? Could you give any pointers in doing it right? 
  Jazakumullahu khairan.
  Answer
  Wa alaikumu-ssalaam wa
  rahmatu Allahi wa barakatuhu. Wa iyyakum
  wa al-muslimeen. 
  The letters which have
  the characteristic of elevation of the posterior portion of the tongue (
   ) are
) are 
   , and are formed
  into the phrase:
, and are formed
  into the phrase: 
   . 
  These letters always have tafkheem, which is defined as: It
  is a heaviness (fatness) that enters the body of the letter, so that the mouth
  is filled with its reverberation (echo). 
  Of these letters, four
  also have the characteristic of
. 
  These letters always have tafkheem, which is defined as: It
  is a heaviness (fatness) that enters the body of the letter, so that the mouth
  is filled with its reverberation (echo). 
  Of these letters, four
  also have the characteristic of 
   , which is a sticking or adhering
  of the tongue to the roof of the mouth or part of the roof of the mouth. 
  These four letters are:
, which is a sticking or adhering
  of the tongue to the roof of the mouth or part of the roof of the mouth. 
  These four letters are: 
   ,and
  because of this second strong characteristic in addition to
 ,and
  because of this second strong characteristic in addition to 
   , or elevation of the tongue,
  they have a stronger tafkheem, or heaviness than the rest of the letters in
  the group.
, or elevation of the tongue,
  they have a stronger tafkheem, or heaviness than the rest of the letters in
  the group. 
  There are three steps
  needed to make proper tafkheem:
  
    - 
      Raising the
      posterior part of the tongue to the roof of the mouth. 
- 
      Creating more space
      between the roof of the mouth and the bottom of the mouth.
      
       
- 
      Focusing the
      pressure of the sound of the letter to the roof of the mouth. 
        
Raising
  the tongue in the back causes the heavy sound to enter the mouth. 
  Creating a little more space between the top and bottom of the mouth
  increases the area for the sound and helps increase the echo, and focusing the
  pressure of the sound of the letter to the roof of the mouth prevents the
  built up tafkheem from escaping out the mouth. 
   
  
  
  The
  vowel on the letter on any of the letters of the group 
   determines the
  level of tafkheem.  That is a
  lesson in itself, and we will cover it insha’ Allah in future tidbit
  lessons.
determines the
  level of tafkheem.  That is a
  lesson in itself, and we will cover it insha’ Allah in future tidbit
  lessons.