Halakhah do Przysłów 17:14

And the beginning of a person’s judgment after death is because he refrained from study; and as they, may their memory be blessed, expounded (Kiddushin 40b) from that which is written (Proverbs 17:14), "The beginning of judgment is as one who lets out (poter) water” - meaning to say, [for] one who exempts (poter) himself from 'water,' that is the beginning of the quarrel on his soul after he dies - and 'water' is only Torah, as it is stated (Isaiah 55:1), "Ho; all who are thirsty, go to water." And words of Torah are compared to water because the Torah only endures in a man who is crushed and lowly, but not in a man who is proud; [just] like water also does not stand on mountains, but rather in valleys (Taanit 7a). And so [too,] that which they, may their memory be blessed, said (Kiddushin 30a) that a man is obligated to divide his time into three parts: a third for involvement with the written Torah; a third for involvement in the oral Torah, meaning to say to accustom himself to be an expert in the text of the Mishnah and the Bereita, that they should be fluent in his mouth; and a third in understanding matters from the root. And he should not place all of his heart to [only] one of them, lest he forget the rest. And [all] three of them are the essence of the Torah, as it is impossible to know it without [all of] them.