Conditions that

1. Mosiah 19: 15
     15 Therefore the Lamanites did spare their lives, and took them captives and carried them back to the land of Nephi, and granted unto them that they might possess the land, under the conditions that they would deliver up king Noah into the hands of the Lamanites, and deliver up their property, even one half of all they possessed, one half of their gold, and their silver, and all their precious things, and thus they should pay tribute to the king of the Lamanites from year to year.
2. Alma 27: 24
     24 And now behold, this will we do unto our brethren, that they may inherit the land Jershon; and we will guard them from their enemies with our armies, on condition that they will give us a portion of their substance to assist us that we may maintain our armies.
3. Alma 54: 11
     11 But behold, it supposeth me that I talk to you concerning these things in vain; or it supposeth me that thou art a child of hell; therefore I will close my epistle by telling you that I will not exchange prisoners, save it be on conditions that ye will deliver up a man and his wife and his children, for one prisoner; if this be the case that ye will do it, I will exchange.