The word(s) "join" appears 65 time(s) in 58 verse(s) in Quran in Muhammad Habib Shakir translation.

(51) He has made plain to you of the religion what He enjoined upon Nuh and that which We have revealed to you and that which We enjoined upon Ibrahim and Musa and Isa that keep to obedience and be not divided therein; hard to the unbelievers is that which you call them to; Allah chooses for Himself whom He pleases, and guides to Himself him who turns (to Him), frequently.

(52) And We have enjoined on man doing of good to his parents; with trouble did his mother bear him and with trouble did she bring him forth; and the bearing of him and the weaning of him was thirty months; until when he attains his maturity and reaches forty years, he says: My Lord! grant me that I may give thanks for Thy favor which Thou hast bestowed on me and on my parents, and that I may do good which pleases Thee and do good to me in respect of my offspring; surely I turn to Thee, and surely I am of those who submit.

(53) Those who are niggardly and enjoin niggardliness on men; and whoever turns back, then surely Allah is He Who is the Selfsufficient, the Praised.

(54) And others from among them who have not yet joined them; and He is the Mighty, the Wise.

(55) Lodge them where you lodge according to your means, and do not injure them in order that you may straiten them; and if they are pregnant, spend on them until they lay down their burden; then if they suckle for you, give them their recompense and enjoin one another among you to do good; and if you disagree, another (woman) shall suckle for him.

(56) Or enjoined guarding (against evil)?

(57) And they were not enjoined anything except that they should serve Allah, being sincere to Him in obedience, upright, and keep up prayer and pay the poor-rate, and that is the right religion.

(58) Except those who believe and do good, and enjoin on each other truth, and enjoin on each other patience.