Nothing is (incumbent) on the Apostle but to deliver (the message), and Allah knows what you do openly and what you hide.

And nothing hinders their spendings being accepted from them, except that they disbelieve in Allah and in His Apostle and they do not come to prayer but while they are sluggish, and they do not spend but while they are unwilling. (The Immunity 9.54)

They swear to you by Allah that they might please you and, Allah, as well as His Apostle, has a greater right that they should please Him, if they are believers.

They ask you about the windfalls. Say: The windfalls are for Allah and the Apostle. So be careful of (your duty to) Allah and set aright matters of your difference, and obey Allah and His Apostle if you are believers.

And if they were content with what Allah and His Apostle gave them, and had said: Allah is sufficient for us; Allah will soon give us (more) out of His grace and His Apostle too; surely to Allah do we make our petition.

(This is a declaration of) immunity by Allah and His Apostle towards those of the idolaters with whom you made an agreement.