What specialty of the Prophet Muhammad (SAW) is meant in 33:50?

What exactly is meant by the bold part in the below verse: > O Prophet, indeed We have made lawful to you your wives to whom you > have given their due compensation and those your right hand possesses > from what Allah has returned to you [of captives] and the daughters of > your paternal uncles and the daughters of your paternal aunts and the > daughters of your maternal uncles and the daughters of your maternal > aunts who emigrated with you and a believing woman if she gives > herself to the Prophet [and] if the Prophet wishes to marry her, > __[this is] only for you, excluding the [other] believers.__ We certainly know what We have made obligatory upon them concerning their > wives and those their right hands possess, [but this is for you] in > order that there will be upon you no discomfort. And ever is Allah > Forgiving and Merciful. I guess the specialty exists in this part since it is the last thing that is said: > a believing woman if she gives herself to the Prophet [and] if the > Prophet wishes to marry her Is that correct? And if so please explain how this is different for other believers.