The Four Seals Of Truth

‘… if one utters these 4 aphorisms of the Dharma, in uttering them one is expressing all 84,000 articles of the Dharma…

“To fully engage in understanding the inexhaustible doctrine of the Bodhisattvas and Mahasattvas that

(1) all compounded phenomena are impermanent;
(2) all contaminated phenomena* are suffering;
(3) all phenomena are without self;
(4) Nirvana is peace.”‘

— The Buddha

(The Noble Mahāyāna Sūtra ‘The Questions of the Nāga King Sāgara’: Āryasāgaranāgarājaparipṛcchānāmamahāyanasūtra)

* those tainted by defilements