Mahavibhutyo pacitang dakshinaih /
Tatairvashishthasit Gautamadibhirdhanvanya,

Mistrotama sau saraswatim //
Yasya kritushu girvanaih sadasya —tvijojanah,

Tulya lupanca nimisha vyadrashyanta suvasasah //
Svargo na prarthito yasya manujairamara priyah /

Shrashyadribha rupgayadribharuttama shloka ceshtitam //

–Bhagavata 9/22,23,24

Meaning – Rajarshi (a sage who previously belonged to a royal family) and famous devotee Ambarisha used to worship God Yajneshvar by several Ashvamedha mahayajnas. He used to spend his wealth in yajna, donations, etc. The chief priests of his yajnas were great sages like Vashishtha, Asit, Gautama, etc. Ambarisha used to perform yajna in the sacred area known as Dhanvadesha, where the stream of river Saraswati flowed. The splendor of priests and other members in his yajnas used to be effulgent, like gods.

Even his eyelids did not wink due to his concentration in the work related to yajna. His Praja (the subjects) too were not desirous of Heaven, comfort or pleasure due to the flow of spirituality caused by the yajnas. All of them used to be busy in devoted worship of God Yajneshvar through yajnas with a motive that was free from any desires.

While talking to king Parikshita, sage Shukadeva, mentions about the Ashvamedha Anushthans of king Bali –

Deveshyathanilineshu Bali Vairotcana Purim /
Devadhanimadhishthaya vasham nitye jagatriyam //

Tam vishvajayinam shishyam Bhrigavah shishyavatsalah /
shatena haya medhanam manuvratamayajayat //

- Bhagvata 8/15/33-34

Meaning - When all the Gods disappeared (or retreated) due to the luster of king Bali, that was generated by yajna, the son of Virocan, king Bali, was then seated on the throne of Heaven. All the three worlds came under his control. Afterwards, the Brahmanas of the race of Bhrigu, who loved his subjects very much, made the­ universal monarch, King BaIi, perform one hundred Ashvamedhas, in order to make the Indratva (the rulership of Heaven) stable. The description of the yajnas of Bali is also found in Narada Purana –­