Tafsir of Al-Hijr 15:20

وجعلنا لكم فيها معايش

And We have provided therein means of living, for you, Here Allah mentions that He created the earth with different means of provisions and livelihood of all kinds.

ومن لستم له برازقين

and for those whom you provide not. Mujahid said, "This refers to the riding animals and the cattle.'' Ibn Jarir said, "They are slaves, men and women, as well as the animals and the cattle. The meaning is that Allah, may He be exalted, is reminding them of the ways of earning provision that He has made easy for them, and of the animals that He has subjugated for them to ride and to eat, and the slaves from whom they benefit, but the provision of all of these comes from Allah alone.''