 Levinsohn's new position brought him into close relations with Nachman Krochmal of Zolkiev, an authority on all questions of rabbinical learning and Jewish custom.In 1817 he submitted to Krochmal his first critical study, entitled "Ha-Mazkir," and Krochmal was so favorably impressed with the work that he offered to contribute toward the expense of publication.Unfortunately, it was never printed, and only a part of it was incorporated in "Te'uddah" and "Bet Yehudah."