“The guy who was laughing throughout the musar shmooze is a tzorich iyun.” (Weiser)

“Many questions in science remain a tzorich iyun even today.” (Weiser)

“Unless you can change the girsa, the whole sugya's a tzorich iyun.” (Weiser)

“The achroinim try a few terutzim, but most blaib a tzorich iyun.” (Weiser)

"Why davka the Lechem Hapanim? In other words, he is not explaining the connection, he is not making it less tzorich iyun, he is just giving another example of the connection." (source)