36. It should be noted that since all rabbanim and some batei din in Yerushalayim forbade entering, one who enters violates the issur of לא תסור (ע''פ שו''ת אבקת רוכל סי' י', ס' טל חיים עמ' ק''כ ) even if in his mind and based on his calculations what he is doing is mutar. The posuk says (פ' שופטים י''ז, י''א ), “על פי תורה אשר יורוך ועל המשפט אשר יאמרו לך תעשה לא תסור מן הדבר אשר יגידו לך ימין ושמאל.” Rashi explains, “Even if [they] tell you right is left and left is right, and all the more so when [they] tell you right is right and left is left.” Since all the poskim forbade going up to Har HaBayis, both right and left are obligated by the Torah to listen to the Chachomim, even if one’s calculations lead him to a different conclusion.
