According to Jain tradition, after a Tirthankara attains Keval Jnana (omniscience), they deliver sermons in a divine assembly called Samavasaran. However, after a Tirthankara attains moksha (liberation), they leave their physical body and are no longer present in the worldly realm, so the Samavasaran also disappears.

No one can have darshan (audience) of a Samavasaran after the Tirthankara attains moksha, as per Jain scriptures. Once the Tirthankara attains moksha, the Samavasaran ceases to exist. Therefore, it is not possible for any king or person to have darshan of the Samavasaran after the Tirthankara's moksha.

However, there is a well-known story in Jain literature regarding King Shrenik (also known as Bimbisara) who expressed the desire to have darshan of Lord Mahavira's Samavasaran after Mahavira's moksha. He was told that it would not be possible in his current life, but due to his intense devotion, he would be reborn as a future Tirthankara, where his wish would be fulfilled.

Summary: No king or person has had darshan of the Samavasaran after a Tirthankara's moksha, as per Jain teachings.