The 3rd of Cheshvan is the yahrtzeit (anniversary of the passing) of the famed Chassidic master Rabbi Israel of Ruzhin (1797-1850), known as "The Holy Ruzhiner."
Rabbi Israel was a great-grandson of Rabbi DovBer of Mezeritch; a close friendship existed between the Ruzhiner Rebbe and the 3rd Chabad Rebbe, Rabbi Menachem Mendel of Lubavitch.
Link: Three Stories
Rabbi Ovadia Yosef, a leader of Sephardic Jewry and chief rabbi of Israel, passed away on 3 Cheshvan, 5774 (2013), at the age of 93.
A widely published author on Jewish law, Rabbi Yosef was considered by scholars of all backgrounds to be a rabbinical authority with a rare grasp of nearly every area of Torah scholarship. He was known for his encyclopedic knowledge of a wide swath of halachic texts, ranging from the well-known to the most obscure. In his halachic rulings, he would often list dozens of previous rulings and then decide in accordance with what he perceived to be the majority opinion.
To one whose self is his body, death of the body is death of the self. But for one whose self is his love, awe and faith, there is no death, only a passing. From a state of confinement in the body, he makes the passage to liberation. He continues to work within this world, and even more so than before.
The Talmud says that Jacob, our father, never died. Moses, also, never died. Neither did Rabbi Judah the Prince. They were very high souls who were one with Truth in an ultimate bond—and since Truth can never die, neither could they.
Yes, in our eyes we see death. A body is buried in the ground, and we must mourn the loss. But this is only part of the falseness of our world. In the World of Truth, they are still here as before.
And the proof: We are still here. For if these high souls would not be with us in our world, all that we know would cease to exist.