It is narrated from Sayyiduna Sahl bin Sa'd (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) used to lean against a palm trunk. Then, when the people became many, he (peace and blessings be upon him) said: "The people have become many; if only there were a minbar on which I could sit." Abbas said: So my father went and cut the wood of the minbar from al-Ghabah. I do not remember whether he made it himself or had someone else make it.
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5711