Маджхима Никая 5:192
SUJATOTaṁ, bhikkhave, pariggahaṁ pariggaṇheyyātha, yvāssa pariggaho nicco dhuvo sassato avipariṇāmadhammo, sassatisamaṁ tatheva tiṭṭheyya.
Mendicants, it would make sense to be possessive about something that’s permanent, everlasting, eternal, imperishable, and will last forever and ever.