This is the 13347th most frequent Turkish word.
kimliğinden
"From his/her/its identity" or "of his/her/its identity."
Here, 'kimlik' refers to individual identity and the suffix '-nden' indicates derivation or source.
Bu konuda kimliğinden ödün vermemelisin.
You should not compromise your identity on this matter.
In this sentence, 'kimlik' refers to official identification, using the possessional suffix '-inden'.
Pasaportunuzla birlikte kimliğinden örnek alabilir misiniz?
Can you also provide a copy of your ID along with your passport?
In this use, 'kimlik' signifies cultural or personal identity, with '-nden' indicating source or origin.