משך חכמה — ולא נודע כי באו אל קרבנה

Q — Why is the detail "ולא נודע כי באו אל קרבנה ומראיהן רע כבתחלה" said only about the cows in Pharaoh's dream and NOT about the parallel detail in the stalks?

A — That detail alludes to a future event 210 years after Pharaoh's dream — וינצלו את מצרים, when all the wealth Egypt had "swallowed" would leave with Israel; Yosef's rule is that "the reason the dream was doubled is that it is near" — but the part not doubled signals a true decree that is NOT imminent, which is why this particular detail appears only in the cows.