Paṭhamakosalasutta
“Yāvatā, bhikkhave, kāsikosalā, yāvatā rañño pasenadissa kosalassa vijitaṁ, rājā tattha pasenadi kosalo aggamakkhāyati. Raññopi kho, bhikkhave, pasenadissa kosalassa attheva aññathattaṁ atthi vipariṇāmo. Evaṁ passaṁ, bhikkhave, sutavā ariyasāvako tasmimpi nibbindati. Tasmiṁ nibbindanto agge virajjati, pageva hīnasmiṁ.
Kosala (1st)
“As far as Kāsi and Kosala extend, and as far as the dominion of King Pasenadi of Kosala extends, King Pasenadi is said to be the foremost. But even King Pasenadi decays and perishes. Seeing this, a learned noble disciple grows disillusioned with it. Their desire fades away even for the foremost, let alone the inferior.