Хасидус к Тегилим 19:4

He will not realize that regarding the early tzaddikim, who were truly able to purify and cleanse souls in such a lofty manner that we have no grasp, the hasidim came to listen and stayed by their rebbe for some time.⁴⁹³In other words, he is forgetting the ‘student’s obligation’ to invest in his own spiritual growth. And, if they were not able to stay for a long duration, they did come more regularly. All their desire was focused on receiving even one thing, even a movement or hint from their rebbe. They inclined their hearts to receive the light and holiness which the rebbe would send directly into their hearts without words nor speech.⁴⁹⁴See Psalms 19:4. Nor will he consider [the difference between] how the hasid traveled then and how he does now, as mentioned above; and how we no longer have among us the holy sages, and how even they were different, some quick to learn and slow to forget, others slow to learn and quick to forget,⁴⁹⁵See Mishnah Avot 5:12.etc., and, how it is impossible to inspire one who travels so infrequently. Even would the rebbe gird all his strength for an entire Sabbath in order to cleanse him and remove his garments and raise up his troubled soul and revive it from its weariness until it is capable of receiving of the rays of light he sends it—still, one Sabbath alone will not suffice. Especially when so much time passes between each visit until he returns, so that the rebbe’s avodah during the first visit has already weakened.