The Life of Ballālasena 2.16

Vyāsa said:
The teacher, the father, the eldest brother, and the king,
the maternal uncle, the father-in-law, the protector, the maternal grandfather, the paternal grandfather,

the eldest kinsman, and the paternal uncle—these among men are remembered as gurus.
The mother, the maternal grandmother, and the sisters of the father and mother, and so forth,

the mother-in-law, the paternal grandmother, the eldest [sister], and the nurse are female gurus.
Thus has this group of gurus on the mother's and father's sides been described, O kings;
they are to be served with deeds of mind, speech, and body.

Seeing a guru, one should stand up, greet him with hands folded in reverence;
one should not sit together with them, nor quarrel [with them] for one's own sake.

Even for the sake of one's life, one must never speak out of hatred toward gurus;
even if elevated by other virtues, one who hates a guru falls low.

And among all gurus, five are especially to be worshipped with effort;
of them, the first three are supreme, and among those the mother is the greatest.

He who fosters, she who gives birth, he by whom knowledge is taught,
the eldest brother, and the husband: these five are remembered as gurus.

With all one's effort, or even by giving up one's life,
these five are to be especially worshipped by one who desires prosperity;
there is no god equal to a father, there is no guru equal to a mother.

One should always do what is dear to both of them by deed, mind, and speech;
without their permission, one must not resort to any other duty.

Fire is the guru of the twice-born; the Brahmin is the guru of the castes;
the husband alone is the guru of women; a guest is a guru everywhere.

The best of men who bows to a Brahmin with the thought that he is Viṣṇu,
his lifespan, sons, fame, and wealth increase.

A Brahmin is to be honored even if ill-behaved, but not a Śūdra even if he has subdued his senses;
for Brahmins have the nature of Kṣatriyas, and must never be despised.

Brahmins are mounted on the chariot of the Dharmaśāstras and bear the sword of the Vedas;
whatever they might say, even in sport, is remembered as supreme dharma.

Thus ends the sixteenth chapter in the Vyāsapurāṇa of the Vallālacarita, entitled "The Proclamation of the Group of Gurus."

Now the seventeenth chapter.