[As noted above, one receives a great reward for involvement in Torah study], for it is known that the essence of the [rationale for] Torah study, aside from [the fact] that [involvement in Torah] study brings [one] to act [properly in fulfilling the mitzvos, there] is [also] a Torah commandment [to study Torah], as is written [in Parshas “VaEschanan”], “…and you shall learn [of] them and you shall guard yourselves to perform them.” (Divarim: 5; 1)
Our Sages of Blessed Memory have also said [in maseches “Peah” (Chapter 1; Mishna 1), as follows]: “These are the things for which a person consumes their fruits [in this world and the principle [of the reward] remains intact for him for The World to Come]…, and Torah study is equivalent to all of them.” It is also [taught] in the Yirushalmi, [in maseches] “Peah”, that all of the mitzvos are not equivalent to one word [of] Torah [study].
 This teaching is found in [maseches] “Birachos”, Chapter 9, Mishna 5, though the text as recorded by the Chofetz Chaim differs slightly from that which is found in maseches “Birachos”.
 The teaching states, “It was taught that Rabbi Shimon ben Yochai says, ‘If you have seen that the people are despairing too a great degree from [involvement in] Torah [study, then] stand up and strengthen yourself in it, and you will receive the reward of all of [these people]. What is the reason [for the person receiving this reward]? [When] your Torah has been abandoned, [then] it is the time to act for HaShem [and involve yourself in Torah study].”
 The entire pasuk states, “And Moshe called to all of Israel and said to them, ‘Israel, listen to the ordinances and the laws which I command you today and you shall learn [of] them and you shall guard yourselves to perform them’.” (Divarim: 5; 1)
The “Torah T’mimah” on this pasuk, points out that we learn in maseches “Kiddushin” (29b), that we learn from this pasuk that one has an obligation to teach themselves Torah, even if his father had not fulfilled his obligation to have taught him Torah.
 The mishna from maseches “Peah” lists honoring one’s parents, acts of kindness, instilling peace between one person and his fellow, and Torah study as the four things for which a person is rewarded in this world and receives his entire reward for these mitzvos in The World to Come. Subsequent to the blessings recited for Torah study, this mishna is quoted, but lists ten mitzvos for which one is rewarded in this world and receives the complete reward for the performance of these mitzvos in The World to Come. In addition to the mitzvos cited above, we learn that making it early to the Beis Midrash (Torah study hall) in the morning and during the evening, inviting guests, visiting the sick, helping enable a bride to get married, escorting the dead to burial, and an in-depth look at tefillah (prayer), are also mitzvos for which the person receives a reward in this world, in addition to receiving his complete reward in The World to Come. It is Torah study which we learn is equivalent to these other great mitzvos which are listed.
 This teaching is also found in The Talmud Yirushalmi in maseches “Peah”, in the first chapter, first mishna.
 This section from maseches “Peah” quotes Rabbi Berechiah and Rabbi Chiya from the village of Tichumin concerning the mitzvah of Torah study. Rabbi Berechiah says that the entire world is not equivalent to even one word of Torah studied and Rabbi Chiya says that all of the mitzvos in The Torah are not equivalent to the study of even one word of Torah studied.