Sufyan narrates from Abu Hazim that they also asked Sahl bin Sa'd (may Allah be pleased with him): What was the pulpit of the Prophet (peace and blessings be upon him) made of? He said: There is no one left among the people who knows more (about this) than me. It was made of tamarisk wood; the servant of so-and-so made it. And I saw the Prophet (peace and blessings be upon him): when he climbed onto it, he faced the qiblah and said 'Allahu akbar' (Allah is the Greatest), then recited the Qur'an, then bowed, then came down from the pulpit walking backwards and prostrated, then he climbed onto the pulpit and recited the Qur'an, then bowed, then came down from the pulpit walking backwards and prostrated.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5229