Qushayrī, ʻAbd al-Karīm ibn Hawāzin,  986-1072 <br/><br/>
Al-Qushayri's Epistle on Sufism :   Al-Risala al-qushayriyya fi 'ilm al-tasawwuf 
Ahmad hashim salmi 
 - Dar al kotob al ilmiyah:  Scientific book house,  1971. 
 - 440 p 
<br/><br/><label>ISBN: </label>9782745152688 
<br/><br/><label>Dewey Class. No.: </label>297.4  / QUS/A