How was the Prophet's prayer (peace and blessings be upon him) before it was prescribed on the night of Al-Isra' and Al-Mi'raj?

There is no authentic or good narration that clarifies how the Prophet, peace and blessings be upon him, prayed before the Isra' and Mi'raj, and there is no benefit in knowing that. This is because we are devoted to what Allah has commanded us and what the Sharia has settled upon after its completion.