Here's why:
* Third-person narration uses pronouns like "he," "she," "it," and "they" to refer to the characters. In this excerpt, the narrator refers to the grandfather as "Mammedaty" and describes his actions using "he" and "it."
* First-person narration would use "I" or "we" to tell the story from the perspective of the speaker.
* Second-person narration uses "you" to directly address the reader.
While the passage hints at a personal connection (the narrator is likely a descendant of Mammedaty), it doesn't directly use first-person pronouns. Therefore, the voice is third-person.