Allah reminds His servants of the blessing of the An'am (cattle) and other such animals, which He has created for them. Among the many benefits they gain from them is clothing and furnishings made from their wool and hair. There are numerous other benefits, such as the milk they produce and the offspring they generate. We can also eat them if we slaughter them in a lawful manner. He also mentioned that there is beauty in them:

{when you bring them home in the evening} i.e., when they come back from the pasture in the evening.

i.e., when you take them out in the morning to the pasture. Thus they are an adornment to mankind, as well as providing him with food and clothing. And they can also be used as mounts, and to carry loads, to whichever city or region one may wish to travel. They carry heavy loads which a person could not possibly carry himself. Thus Allah says,

Thus people use animals for all kinds of purposes, for riding and for carrying loads, as Allah says:

{And verily, there is indeed a lesson for you in the An'am (cattle). We give you to drink (milk) of that which is in their bellies. And there are numerous (other) benefits in them for you. Of them you eat, and on them and on ships you are carried.} (23:21-22)

{Allah, it is He Who has made cattle for you, so that some you may ride, and some you may eat. And you find (many other) benefits in them; you may reach by their means a desire that is in your breasts (i.e. carry your goods, loads), and on them and on ships you are carried. And He shows you His Ayat. Which, then of the Ayat of Allah do you deny?} (40:79-81).

Thus here Allah says, after enumerating these blessings,

meaning, your Lord is the One Who has subjugated the An'am (cattle) to you. This is like the Ayat:

{Do they not see, that of what Our Hands have created, We created the An'am (cattle) for them, so that they may own them, and We subdued them so that they may ride some and they may eat some.} (36:71-72).

{And He made mounts for you out of ships and cattle. In order that you may ride on their backs, and may then remember the favor of your Lord when you mount upon them, and say: "Glory be to the One Who subjected this to us, and we could never have it (by our efforts). And verily, to Our Lord we indeed are to return!"} (43:12-14)

Ibn 'Abbas said,

{In them there is warmth} refers to clothing;

{and numerous benefits} refers to the ways in which they derive the benefits of food and drink from them."