Likutei Moharan 29:7/ליקוטי מוהר"ן כ״ט:ז׳

17. Conceptually, this is the malady [known as] nophel (epilepsy), God spare us, when the blood surges and shoots up to the brain and puts pressure on the mind. Because of the pressure on the mind, the limbs tremble. The reason for this is that the brain is the commander of the army, and when the enemy attacks the commander, all his soldiers are in an uproar because they are dependent upon him. And then the Divine Presence NoPheLet (falls), God forbid, as in (Amos 9:11), “the booth of David that NoPhaLet (has fallen).”

2But through the General Remedy—which arouses the mind and draws whiteness to the gidim, as in, “At all times let your garments be white”—she is healed from the malady of NoPheL. Then, “she NaPhLah (fell), but will no more. Arise, O maiden of Israel” (ibid. 5:2). And then speech is permitted, corresponding to, “Open your mouth.”

3This is the meaning of: “Do not go gossiping… Do not stand idly over your friend’s blood.” “Your friend” alludes to the mentalities, which are “two friends who never separate” (Zohar III, 4b). When they are not silenced or prevented from doing their job by a surge of blood pressuring the mind, you will not be guilty of “Do not go about gossiping.” This is because speech is then permitted; the aspect of “Open your mouth” in the days of Rabbi Shimon, etc.