I heard the Messenger of Allah ﷺ say, "There is no amputation for stealing fruit or kathar." Kathar refers to the pith of the palm tree.
أخبرنا قتيبة قال حدثنا الليث عن يحيى بن سعيد عن محمد بن يحيى بن حبان عن عمه أن
سمعت رسول الله ﷺ يقول لا قطع في ثمر ولا كثر والكثر الجمار
Sahih. It was mentioned before, and it appears in Sunan al-Kubra, no. 7457. Tirmidhi also transmitted it in the Book of Hudud, chapter on what has been said "There is no amputation for fruit or unripe date palm hearts", no. 1449, from Qutayba, through him.