All 5 Uses of

enjoin

in

Don Quixote

Didst thou not mark with what authority I commanded him, and with what humility he promised to do all I enjoined, specified, and required of him?†
Chpt 1.31-32 *

enjoined = urged or commanded someone to do something

"That will I not, in sooth," said he of the White Moon; "live the fame of the lady Dulcinea's beauty undimmed as ever; all I require is that the great Don Quixote retire to his own home for a year, or for so long a time as shall by me be enjoined upon him, as we agreed before engaging in this combat."†
Chpt 2.63-64

"You would deal with them more harshly and cruelly than their owner himself," said Vivaldo, "for it is neither right nor proper to do the will of one who enjoins what is wholly unreasonable; it would not have been reasonable in Augustus Caesar had he permitted the directions left by the divine Mantuan in his will to be carried into effect.†
Chpt 1.13-14

"By my faith, brother," said he of the Grove, "my stomach is not made for thistles, or wild pears, or roots of the woods; let our masters do as they like, with their chivalry notions and laws, and eat what those enjoin; I carry my prog-basket and this bota hanging to the saddle-bow, whatever they may say; and it is such an object of worship with me, and I love it so, that there is hardly a moment but I am kissing and embracing it over and over again;" and so saying he thrust it into Sancho's hands, who raising it aloft pointed to his mouth, gazed at the star†
Chpt 2.13-14

And so saying he stood up and laid his hand on his sword, waiting to see what the Knight of the Grove would do, who in an equally calm voice said in reply, "Pledges don't distress a good payer; he who has succeeded in vanquishing you once when transformed, Sir Don Quixote, may fairly hope to subdue you in your own proper shape; but as it is not becoming for knights to perform their feats of arms in the dark, like highwaymen and bullies, let us wait till daylight, that the sun may behold our deeds; and the conditions of our combat shall be that the vanquished shall be at the victor's disposal, to do all that he may enjoin, provided the injunction be such as shall be becoming a knight."†
Chpt 2.13-14

Definitions:

(1) (enjoin as in: enjoined us to act)
to urge or command someone to do something
(2) (enjoin as in: enjoined us from acting)
to prohibit someone from doing something