In the early years of his leadership, the founder of Chabad Chasidism, Rabbi Shneur Zalman, would expound his teachings in the form of short, homiletic sayings. One of these early "short discourses" was based on the Talmudic passage, "All bearers of collars go out with a collar and are drawn by a collar." The Talmud is discussing the laws of Shabbat, on which it is forbidden for a Jew to allow his animal to carry anything out from a private domain to a public domain; however, it is permitted to allow one's animal to go out with its collar around its neck, and even to draw it along by means of its collar. But the Hebrew word the Talmud uses for "collar," shir, also means "song." Thus Rabbi Shneur Zalman interpreted the Talmud's words to say that, "The masters of song - the souls and the angels - go out in song and are drawn by song. Their 'going out' in yearning for G-d, and their drawing back into their own existence in order to fulfill the purpose of their creation, are by means of song and melody."
This latest teaching by Rabbi Shneur Zalman, which quickly spread among his followers throughout White Russia and Lithuania, elicited a strong reaction from his opponents, who complained that the chasidim have, yet again, employed homiletic word play and outright distortion of the holy Torah to support innovations to Jewish tradition. The Talmud, said they, is talking about collars worn by animals, not about the singing of souls and angels!
Rabbi Shneur Zalman's words caused a particular uproar in the city of Shklov. Shklov was a town full of Torah scholars and a bastion of opposition to chasidism. There were chasidim in Shklov, but they were a small and much persecuted minority, and this latest controversy inflamed the ardor of their detractors. While the chasidim of Shklov did not doubt the Rebbe's words, they were hard-pressed to defend them in the face of the onslaught of outrage and ridicule this latest saying had evoked.
A while later, Rabbi Shneur Zalman passed through Shklov on one of his journeys. Among those who visited the Rebbe at his lodgings were many of the town's greatest scholars, who presented him with the questions and difficulties they had accumulated in the course of their studies. For even the Rebbe's most vehement opponents acknowledged his genius and greatness in Torah. The Rebbe listened attentively to all the questions put to him but did not reply to any of them. However, when the scholars of Shklov invited him to lecture in the central study hall, the Rebbe accepted the invitation.