Sayyiduna Buraydah (may Allah be pleased with him) narrates: I heard the Prophet (peace and blessings be upon him) say: "Are stones and trees numerous?" He said this three times, and we said: "Yes!" The Prophet (peace and blessings be upon him) said: "By the One in whose Hand is my soul, my intercession will be (for people) greater in number than stones and trees."
At-Tabarani recorded it in al-Mu'jam al-Awsat. Its chain contains a narrator, Sahl bin Abdullah bin Buraydah, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب البعث / 18526