Mutlaq: a term denoting a thing without a specified additional attribute; its initial rule is application according to its unrestricted wording.
Muqayyad: a term denoting a thing together with a specified qualification; its rule is application according to that qualification.
«أَوْ تَحْرِيرُ رَقَبَةٍ»
Or freeing an enslaved person. (Al-Ma’idah 5:89)
«فَتَحْرِيرُ رَقَبَةٍ مُؤْمِنَةٍ»
Then freeing a believing enslaved person. (An-Nisa 4:92)
The belief adjective is unstated in the first verse and stated in the second. The next lesson addresses further principles governing literal and figurative language.