The incident involving the mandrakes (dudaim) which Reuben, the eldest son of Jacob, found in the field "during the time of the wheat harvest"--recounted in Genesis 30:14-18--occurred on the fifth of Sivan of the year 2197 from creation (1568 BCE).
On this day, Moses made a covenant with the Jewish people at the foot of Mount Sinai at which the people declared, "All that G-d has spoken, we shall do and hear" (Exodus 24:7) committing themselves to observe the Torah's commandments ("do") and strive to comprehend them ("hear"), while pledging to "do" also before they "hear."
The Talmud relates that when G-d came to give the Torah to the People of Israel in the early morning of Sivan 6 (see "Today in Jewish History" for tomorrow), He found them sleeping. (The Chassidic masters explain that this was an attempt to connect to their subconscious, transcendent self in preparation for their reception of the divine wisdom.) To rectify this lapse, we spend the entire first night of Shavuot (which begins at nightfall tonight) studying Torah. The traditional Tikkun Leil Shavout ("Rectification for Shavuot Night") study program includes the opening and closing verses of each book of the Written Torah (Tanach), as well as of each Parshah; the entire Book of Ruth (see
"Laws and Customs" for tomorrow); the opening and closing sections of each tractate of the Talmud; a list of the 613 mitzvot; and selected readings from the Zohar and other Kabbalistic works.
Any true wisdom, as ethereal as it may be, sits above your head as a massive reservoir of living waters. Provide it only a small opening, and it will burst into your reality and pour down into your life.
Whatever wisdom you learn, whatever you know, do something with it. Make it real.
That is the purpose of meditation and prayer—to be that bridge from wisdom to action.
Sefer HaSichot 5704, p. 122; Igrot Kodesh, vol. 4, p. 269.