In the Words of the Rebbe:

Particulary since the shepherd Aharon HaCohen of our generation − my sainted father-in-law, the Rebbe, the leader of our generation... has emphasized this through his announcement of "Immediate Teshuvah [will bring] immediate Redemption," and the announcement that we only have to "polish the buttons," and afterwards − the declaration that this too has already ended, and it only requires us to "all of you stand prepared" to greet our righteous Moshiach in the true and complete Redemption.

- Dvar Malchus Parshas Behaaloscha 5751