ושמרתם את המצות
Rashi comments: She’lo yavo’u liy’dei chimutz, “So that they do not become leaven. From here Chazal say (Pesachim 3:4), ‘If the dough has begun to rise (if you see a part of the dough is about to become chametz), pat it with cold moisture.’ (The coolness prevents it from rising further and becoming chametz.)” Horav Zalmen Sorotzkin, zl, explains the concept of chimutz, leavening, with regard to part of the dough beginning to rise. Leaven is a sign of separation, dissolution of a relationship, whereby a part of an entity splits from the rest to “do its own thing.” One…