Relative Pronoun, third person, masculine, plural: they, who
The Relative Pronouns [ضَمائرَ الوصل-الاسم الموصول] are used as conjunctions, meaning "that, which, who, whom". They serve the purpose of joining nouns, pronouns or verbs to other nouns or verbs. They are used to introduce subordinate adjectival clauses and therefore create complex sentences. The choice of such pronouns depends on the antecedent's number and gender.
Being nouns, relative pronouns have the characteristics of nouns, namely gender, number, and grammatical case. Relative pronouns are always definite words.
Its usage has two specific rules: it agrees with the antecedent in gender, number and case, and it is used only if the antecedent is definite. If the antecedent is indefinite, no relative pronoun is used. The former is called jumlat sila (conjunctive sentence) while the latter is called jumlat sifa (descriptive sentence).
The purpose of the Relative Noun is to make two expressions relative to one another. The Relative Noun is placed between two expressions. The expression following the Relative Noun is linked to the expression preceding it by a pronoun embedded in the second expression.
The Relative Noun can be thought of as a bridge between two expressions. In terms of grammar, its purpose is to make the second expression relative to the first expression in meaning. The second sentence is required to have a pronoun which refers to the first sentence. This pronoun is termed: عائد and it relates the second expression to the first. The second sentence becomes a relative clause [صلة الموصول] for the first clause. The Relative Noun also has a concealed pronoun which also refers to the same word in the first sentence.
When Relative pronouns used in combination with pronouns and nouns bring great emphasis to the discourse.
If the antecedent is part of the subject phrase, the relative clause is embedded inside the main sentence.
If the antecedent is part of the object phrase/predicate, then the relative clause follows the main sentence.
Sometimes we will encounter a sentence with a relative pronoun and a relative clause, in which the antecedent is absent, but still understood; an example 6:79
It may be used either substantively or adjectively. In the former case it includes the idea of a person or thing, that is to say, it is equivalent to the substantive "Man" and 'Ma" when they are definite [Musoolatun], he, who, that, which. In other case it agrees, like the other adjectives, with its antecedent, which is always a definite substantive, in gender, number and case.
The عائد after it ought to be a pronoun of third person even when the preceding subject is a pronoun of first or second person. More usually, however, the عائد is brought into agreement with the word to which it refers.