Mbh 12.73.3a

"'"Kasyapa said, 'Ruin overtakes the kingdom of the Kshatriya when the Brahmana and Kshatriya contend with each other. Robbers infest that kingdom in which confusion prevails, and all good men regard the ruler to be a Mlechcha. Their oxen do not thrive, nor their children. Their pots (of milk) are not churned, and no sacrifices are performed there. The children do not study the Vedas in kingdoms where Brahmanas abandon Kshatriyas. In their houses wealth does not increase. Their children do not become good and do not study the scriptures and perform sacrifices. Those Kshatriyas that abandon Brahmanas become impure in blood and assume the nature of robbers. The Brahmana and the Kshatriya are connected with each other naturally, and each protects the other. The Kshatriya is the cause of the Brahmana's growth and the Brahmana is the cause of the Kshatriya's growth. When each helps the other, both attain to great prosperity. If their friendship, existing from days of old, breaks, a confusion sets over everything. No person desirous of crossing the ocean of life succeeds in his task even as a small boat floating on the bosom of the sea. The four orders of men become confounded and destruction overtakes all. If the Brahmana, who is like a tree is protected, gold and honey are showered. If, on the other hand, he is not protected, it then tears and sins are showered. When Brahmanas fall away from the Vedas and (in the absence of a Kshatriya ruler) seek protection from the scriptures, then Indra does not pour rain seasonably and diverse kinds of calamities ceaselessly afflict the kingdom. When a sinful wretch having slain a woman or a Brahmana does not incur obloquy in assemblies of fellowmen and has not to stand in fear of the king, then danger threatens the Kshatriya ruler. In consequence of the sins perpetrated by sinful men, the god Rudra appears in the kingdom. Indeed, the sinful by their sins bring upon them that god of vengeance.