Musannaf Ibn Abi Shayba 27:106

Waki’ narrated to us, from Isra’il, from Abu Ishaq, from Silah, from Hudhayfah, who said: The people will be gathered on a single level plain; sight will penetrate them, and the caller will make them hear. Then a caller will call out, "O Muhammad," before the first and the last [generations]. He (the Prophet), peace and blessings be upon him, will say: "At Your service and at Your command. All good is in Your hands. The guided one is he whom You have guided. Blessed and Exalted are You. From You and to You. There is no refuge and no escape from You except to You. Glory be to You, Lord of the House. Blessed and Exalted are You, our Lord." Hudhayfah said: "That is the Praiseworthy Station (al-Maqam al-Mahmud)."