4👑☸ Cattāri Ariya-saccaṃ 四聖諦
👑8☸ → 5👑 sammā-ājīvo
“katamo ca, bhikkhave, sammā-ājīvo?
|What **, *********, is right livelihood?
Sammā-ājīvena jīvitaṃ kappeti —
|Right-livelihood; lives accordingly
ayaṃ vuccati, bhikkhave, sammā-ājīvo.
|This is called, *********, right livelihood.
MN 117 / MA 189 for monk
What is right livelihood?
If there is no seeking [requisites] with a dissatisfied mind, not having recourse to various inappropriate types of spells, not making a living by wrong forms of livelihood; if one seeks robes and blankets with what is in accordance with the Dharma, by means of the Dharma, seeks beverages and food, beds and couches, medicine [or] any [other] requisites of life with what is in accordance with the Dharma, by means of the Dharma.
AN 5.177 for laypeople
832“Bhikkhus, a lay follower should not engage in these five trades. What five? Trading in weapons, trading in living beings, trading in meat, trading in intoxicants, and trading in poisons. A lay follower should not engage in these five trades.”
SN 4.5 arahants teach others Dhamma
“Bhikkhus, I am freed from all snares, both celestial and human. You too, bhikkhus, are freed from all snares, both celestial and human. Wander forth, O bhikkhus, for the welfare of the multitude, for the happiness of the multitude, out of compassion for the world, for the good, welfare, and happiness of devas and humans. Let not two go the same way. Teach, O bhikkhus, the Dhamma that is good in the beginning, good in the middle, good in the end, with the right meaning and phrasing. Reveal the perfectly complete and purified holy life. There are beings with little dust in their eyes who are falling away because they do not hear the Dhamma.  There will be those who will understand the Dhamma. I too, bhikkhus, will go to Senānigama in Uruvelā in order to teach the Dhamma.”
“Short is the life span of human beings,
The good man should disdain it.
One should live like one with head aflame:
There is no avoiding Death’s arrival.”
“The days and nights go flying by,
Life comes to a stop.
The life span of mortals is depleted
Like the water in rivulets.”