Mbh 1.100.2a

“Vaisampayana said, ‘The monarch Santanu, the most adored of the gods and royal sages, was known in all the worlds for his wisdom, virtues, and truthfulness (of speech). The qualities of self-control, liberality, forgiveness, intelligence, modesty, patience and superior energy ever dwelt in that bull among men, viz., Santanu, that great being endued with these accomplishments and conversant with both religion and profit, the monarch was at once the protector of the Bharata race and all human beings. His neck was marked with (three) lines, like a conch-shell; his shoulders were broad, and he resembled in prowess an infuriated elephant. It would seem that all the auspicious signs of royalty dwelt in his person, considering that to be their fittest abode. Men, seeing the behaviour of that monarch of great achievements came to know that virtue was ever superior to pleasure and profit. These were the attributes that dwelt in that great being--that bull among men--Santanu. And truly there was never a king like Santanu. All the kings of the earth, beholding him devoted to virtue, bestowed upon that foremost of virtuous men the title of King of kings. And all the kings of the earth during the time of that lord-protector of the Bharata race, were without woe and fear and anxiety of any kind. And they all slept in peace, rising from bed every morning after happy dreams. And owing to that monarch of splendid achievements resembling Indra himself in energy, all the kings of the earth became virtuous and devoted to liberality, religious acts and sacrifices. And when the earth was ruled by Santanu and other monarchs like him, the religious merits of every order increased very greatly. The Kshatriyas served the Brahmanas; the Vaisyas waited upon the Kshatriyas, and the Sudras adoring the Brahmanas and the Kshatriyas, waited upon the Vaisyas. And Santanu residing in Hastinapura, the delightful capital of the Kurus, ruled the whole earth bounded by seas.