adhikārī ca sambandho viṣayaś ca prayojanam
adhikārī ca sambandho viṣayaś ca prayojanam |
avaśyam eva vaktavyaṁ śāstrādau tu catuṣṭayam ||
(Unknown Source; cited in the Amṛta-ṭīkā to Hari-nāmāmṛta-vyākaraṇam: Maṅgalācaraṇa, 1)
“The eligible person (adhikārī) [to read the text], the relationship (sambandha) [between the text and the subject], the subject (viṣaya) [of the text], and the purpose (prayojana) [of the text]—these four [which are known as the anubandha-catuṣṭaya] must be stated at the beginning of a śāstra.”