Аллюзия к Дварим 6:6

"And these words will be, which I command you today, on your heart" (Devarim 6:6) And there's what to understand that seemingly the language "in your heart" would be more justified, like it says "In your mouth and in your heart to do it" (Devarim 30:14). And so said the elders of our master, our teacher, our rabbi, the great, the memory of the righteous be for a blessing and the world to come, from Kotzk. He told that the words need to be laid like a stone on the heart. And when the heart opens at special times, they will fall into it (this being the end of his [direct] holy speech). Meaning, the heart at most times is closed and the words don't enter within the heart. And in any case, a person cannot give up, rather they should do their own, and should not pay attention to their feeling that the words are not entering into their heart and are not having any action. Rather, the words should be laid like a stone on the outside of the heart and [a person] should not be concerned, and so, when a time comes that the heart opens, at sacred times and suchlike, then immediately the words will fall into the heart.