[59:7] …So take what the Messenger assigns to you, and deny yourselves that which he withholds from you. And fear Allah; for Allah is strict in Punishment.
The point is that^. There must be a very good reason why Prophet (saww) reiterated this point over and over. And there is a reason why he was denied writing a will.
errr…actually it is not a a debate at all. If you open new discussion then a simple mathematical equation will show you the fallacy of the above notion.