Tajrīd expresses the strength of a quality by imagining a second similarly qualified person or thing drawn from the original bearer. An actually existing second entity is not required; the aim is an intensified impression of the quality's perfection.
Seven familiar patterns include min, two distinct bāʾ relations, fī, absence of an intervening particle, kināyah, and self-address. Examples such as “lī min fulān ṣadīq ḥamīm,” “la-tasʾalanna bihi al-baḥr,” “lahum fīhā dār al-khuld,” and “lā khayla ʿindaka tuhdīhā” reveal the respective constructions.
Tajrīd can coincide with metaphor or allusion, but its independent diagnostic feature is the imagined extraction of a counterpart similar in the same quality. Whether an instance of exaggeration is acceptable is an additional question; not every extractive construction is thereby automatically judged rhetorically sound.