Maitrāyaṇīya Āraṇyaka 4.2.p1

4.2.p1

a̱yam̐ vāva kha̱lvasya̍ p̱rativi̍dhirbhū̱tātma̍no̱ yadve̍davidyādhi̱gama̍ḥ
sva̱dharmasyānuca̱raṇa̍m̐ svāśra̱meṣve̱vānukra̍maṇam̐ sva̱dharmasya vā'e̱tadvra̱̱tam̐
sta̍mbaśā̱kheve̍ta̱rāṇya̱neno̍rdhvabhāgbha̍vatya̱nyathā̍vā̱ṅpatatye̱ṣa
sva̱dharmo'bhihi̱3to̱ yo ve̱deṣu̱ na sva̱dharmāti̍krameṇāśra̱mī

This indeed is the remedy for the elemental self: the acquisition of Vedic knowledge,
observance of one's own duty, and progress in one's own stage of life. Indeed, this is the observance of one's own duty—
the others are like branches of a clump. By this, one partakes of what is higher; otherwise, one falls downward. This
is one's own duty declared in the Vedas. One does not become one who belongs to an āśrama by transgression of one's own duty.