Likutei Moharan 282:5/ליקוטי מוהר"ן רפ״ב:ה׳

15. And know, all the tzaddikim of the generation, without exception, are the aspect of a shepherd. For within each one of them is an aspect of Moshe; and each one of them, in his own aspect, makes an aspect of a sanctuary, from which the young children receive the breath of their mouths, as explained above. And each [tzaddik], commensurate with his aspect—the aspect of the sanctuary that he makes—likewise has young children who receive from there. Thus it is that every tzaddik of the generation, without exception, has a specific number of children who receive the breath of their mouths from him; each [tzaddik] commensurate with his aspect, as explained above.

2This is the aspect of what our Sages, of blessed memory, said: Young children are snatched away because of the sin of the generation, as it is said (Song of Songs 1:8), “and graze your young goats by the shepherd’s MiShKaNot (tents)”—[the young children] mitmaShKNin (are taken as surety) for the shepherds (Shabbat 33b).

3This is the explanation of “by the shepherd’s tents.” They receive the breath of their mouths from the aspect of the mishkanot of the shepherds—i.e., the tzaddikim of the generation, each of whom makes a mishkan (sanctuary), as explained above.