Saad found some slaves from among the slaves of Medina cutting down trees in Medina, so he took their belongings. He said to their masters, "I heard the Messenger of Allah ﷺ forbid that anything be cut from the trees of Medina, and he said, 'Whoever cuts anything from them, what he has on him belongs to the one who catches him.'"
حدثنا عثمان بن أبي شيبة حدثنا يزيد بن هارون أخبرنا ابن أبي ذئب عن صالح مولى التوأمة
أن سعدا وجد عبيدا من عبيد المدينة يقطعون من شجر المدينة فأخذ متاعهم وقال يعني لمواليهم سمعت رسول الله ﷺ ينهى أن يقطع من شجر المدينة شيء وقال من قطع منه شيئا فلمن أخذه سلبه
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[Its chain is daif] Bayhaqi (5/199) narrated it from the hadith of Ibn Abu Dhib, through this route, and its chain is daif. Sulayman was not deemed reliable by anyone other than Ibn Hibban.