It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that before having the pulpit made, the Prophet (peace and blessings be upon him) used to deliver the sermon standing against a palm trunk. When he (peace and blessings be upon him) had the pulpit made and moved to it, the trunk began to make a sound; he (peace and blessings be upon him) embraced it and it became quiet, and he said: "Had I not embraced it, it would have kept crying like this until the Day of Resurrection."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12786