Taittiriya Upanishad 1.11

1.11.1

vedamanūcyācāryontevāsinamanuśāsti /
satyaṃ vada /
dharmaṃ cara /
svādhyāyānmā pramadaḥ /
ācāryāya priyaṃ dhanamāhṛtya prajātantuṃ mā vyavacchetsīḥ /
satyānna pramaditavyam /
dharmānna pramaditavyam /
kuśalānna pramaditavyam /
bhūtyaina pramaditavyam /
svādhyāyapravacanābhyāṃ na pramaditavyam // 1//

Having taught the Vedas, the preceptor imparts this post-instruction to the students: "Speak the truth. Practise righteousness. Make no mistake about study. Having offered the desirable wealth to the teacher, do not cut off the line of progeny. There should be no inadvertence about truth. There should be no deviation from righteous activity. There should be no error about protection of yourself. Do not neglect propitious activities. Do not be careless about learning and teaching.

1.11.2

devapitṛkāryābhyāṃ na pramaditavyam /
mātṛdevo bhava /
pitṛdevo bhava /
ācāryadevo bhava /
atithidevo bhava /
yānyanavadyāni karmāṇi /
tāni sevitavyāni /
no itarāṇi /
yānyasmākam̐ sucaritāni /
tāni tvayopāsyāni // 2//

There should be no error in the duties towards the gods and manes. Let your mother be a goddess unto you. Let your father be a god unto you. Let your teacher be a god unto you. Let your guest be a god unto you. The works that are not blameworthy are to be resorted to, but not the others. These actions of ours that are commendable are to be followed by you, but not the others. You should, by offering seats, remove the fatigue of those Brāhmaṇas who are more praiseworthy among us. The offering should be with honour; the offering should not be with dishonour. The offering should be in plenty. The offering should be with modesty. The offering should be with awe. The offering should be with sympathy. Then, should you have any doubt with regard to duties or customs, you should behave in those matters just as the Brāhmaṇas do, who may happen to be there and who are able deliberators, who are adepts in those duties and customs, who are not directed by others, who are not cruel, and who are desirous of merit. Then, as for the accused people, you should behave with regard to them just as the Brāhmaṇas do, who may happen to be there and who are able deliberators, who are adepts in those duties and customs, who are not directed by others, who are not cruel, who are desirous of merit. This is the injunction. This is the instruction. This is the secret of the Vedas. This is divine behest. This is how the meditation is to be done. This is how this must be meditated on.

1.11.3

no itarāṇi /
ye ke cārumacchreyām̐so brāhmaṇāḥ /
teṣāṃ tvayā ' 'sanena praśvasitavyam /
śraddhayā deyam /
aśraddhayā 'deyam /
śriyā deyam /
hriyā deyam /
bhiyā deyam /
sam̐vidā deyam /
atha yadi te karmavicikitsā vā vṛttavicikitsā vā syāt // 3//

1.11.4

ye tatra brāhmaṇāḥ saṃmarśinaḥ /
yuktā āyuktāḥ /
alūkṣā dharmakāmāḥ syuḥ /
yathā te tatra varteran /
tathā tatra vartethāḥ /
athābhyākhyāteṣu /
ye tatra brāhmaṇāḥ saṃmarśinaḥ /
yuktā āyuktāḥ /
alūkṣā dharmakāmāḥ syuḥ /
yathā te teṣu varteran /
tathā teṣu vartethāḥ /
eṣa ādeśaḥ /
eṣa upadeśaḥ /
eṣā vedopaniṣat /
etadanuśāsanam /
evamupāsitavyam /
evamu caitadupāsyam // 4//
ityekādaśa 'nuvākaḥ //