Srimad Bhagavatam Canto 08, Chapter 14, Text 06

SB 8.14.6

palayanti praja-pala
 yavad antam vibhagasah
yajña-bhaga-bhujo deva
 ye ca tatranvitas ca taih
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
To enjoy the results of sacrifices [yajñas], the rulers of the world, namely the sons and grandsons of Manu, discharge the orders of the Supreme Personality of Godhead until the end of Manu’s reign. The demigods also share the results of these sacrifices.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
As stated in Bhagavad-gita (4.2):
 
evam parampara-praptam
 imam rajarsayo viduh
 
“This supreme science was thus received through the chain of disciplic succession, and the saintly kings understood it in that way.” This parampara system extends from Manu to Iksvaku and from Iksvaku to his sons and grandsons. The rulers of the world in the line of hierarchy execute the order of the Supreme Personality of Godhead in the parampara system. Anyone interested in peaceful life must participate in this parampara system and perform yajñas. As Gaudiya Vaisnavas in the parampara system of Sri Caitanya Mahaprabhu, we must perform sankirtana-yajña all over the world (yajñaih sankirtana-prayair yajanti hi sumedhasah). Sri Caitanya Mahaprabhu is the incarnation of the Supreme Personality of Godhead in this Age of Kali, and He will be easily satisfied if the sankirtana movement is spread vigorously all over the world. This will also make people happy without a doubt.
Srimad Bhagavatam Canto 08, Chapter 14, Text 05
Srimad Bhagavatam Canto 08, Chapter 14, Text 07