Bukhari

And ‘Umar (may Allah be pleased with him) had the procedure of li‘an (mutual cursing) carried out beside the pulpit of the Prophet’s Mosque, and Shurayh the judge, al-Sha‘bi, and Yahya ibn Ya‘mur passed judgments in the mosque, and Marwan ordered Zayd ibn Thabit to take an oath beside the pulpit of the Prophet in the mosque. And Imam Hasan al-Basri and Zurara ibn Awfa used to sit in a portico outside the mosque to carry out judicial work. In the narration of Ibn Abi Shaybah, it is mentioned that they used to pass judgments while sitting inside the mosque itself.

Narrated Sahl bin Sa`d: I witnessed a husband and a wife who were involved in a case of Lian. Then (the judgment of) divorce was passed. I was fifteen years of age, at that time.