فُلَانُ بْنُ فُلَانٍ حَفِظَ التَّوْرَاةَ سَنَةَ كَذَا فِي بَلْدَةِ كَذَا
So-and-so, son of so-and-so, memorized the Torah in such-and-such year and city.
The example adds distinct informational layers: identification of the agent, what was memorized, the year and the city. Each element makes the event more specific than the bare statement of memorization.
Such precision is valuable for identifying a historical occurrence. If the purpose is merely to establish ability, however, its date and place may be irrelevant. Context determines which constraints are worth expressing.