Reference for Shabbat 90:1

פצעילי תמרה לרבי שמעון מהו א"ל אין מוקצה לר"ש אלא גרוגרות וצימוקין בלבד

What of unripe dates<span class="x" onmousemove="('comment',' Lit., 'burst dates', I.e., unripe dates that fell off from the tree and were placed in the sun to ripen (Jast.). Others: dates that are split and placed in the sun to ripen. Whilst they are ripening and drying they suffer discoloration and are unfit, yet not so unfit as drying figs and raisins. ');">¹</span> according to R. Simeon? Said he to him: R. Simeon holds that mukzeh applies only to drying figs and raisins.

Jastrow