Matsya Purana 223.12

223.12

api śakrasamo rājā antaḥ kopena naśyati.
so'ntaḥ kopaḥ prayatnena tasmādrakṣyo mahībhṛtā .. 223.11 ..

On the other hand the sovereign who is beset with internal danger, perishes in spite of his being like Indra in power, consequently such a danger and wrath ought to be very carefully guarded against—11