Prophet David and his mistake

xthug

Peace and patience to all

599 The messenger is only to deliver. And God knows what you reveal and what you conceal.
5100 Say 'The bad and the good are not equal, even if the abundance of the bad impresses you.' So be aware of God, O you who possess intelligence, that you may succeed.
5101 O you who believe, do not ask about things which, if revealed to you, would harm you; and if you ask about them after the Qur'an has been sent down, then they will become clear to you. God pardons for them, and God is Forgiving, Compassionate.
5102 A people before you had asked the same, then they became rejecters in it.
5103 God did not decree any restrictions for combining of livestock, or roaming livestock, or ones that give twin births, or a stallion freed from work; but the people who rejected invented lies to God, and most of them do not comprehend.
5104 And if they are told 'Come to what God has sent down, and to the messenger;' they say 'We are content with what we found our fathers doing.' What if their fathers did not know anything nor were guided?
5105 O you who believe, you are responsible for yourselves; none who are misguided can harm you if you are guided. To God is your return, all of you, and then He will inform you of what you have done.

3820 And We strengthened his kingship, and We gave him the wisdom and the ability to make sound judgment.
3821 Did the news come to you of the disputing party who came over into the temple enclosure?
3822 When they entered upon David, he was startled by them. They said 'Have no fear. We are two who have disputed, and one has wronged the other, so judge between us with the truth, and do not wrong us, and guide us to the right path.'
3823 'This is my brother and he owns ninety-nine lambs, while I own one lamb; so he said to me ''Let me take care of it' and he pressured me.''
3824 He said 'He has wronged you by asking to combine your lamb with his lambs. And many who mix their properties take advantage of one another, except those who believe and do good works, and these are very few.' And David guessed that We had tested him, so he sought forgiveness from his Lord, and fell down kneeling, and repented.
3825 So We forgave him in this matter. And for him with Us is a near position, and a beautiful abode.

Peace to all!
I wanted to make a point of this for a couple of reasons

Even though David had "the wisdom" and "the ability to make sound judgment" he is still a man who is very much so capable of making mistakes.
The prophet David wasn't told or inspired that he had made a mistake in his judgment regarding the combining of livestock, he had to "guess" that he had done so.

Now a few important questions arise from this example.
Since God Almighty did not decree any restrictions for combining of livestock (5103) and we are told later in that same verse that the people who rejected invented lies to God, and most of them do not comprehend.

What exactly happened here with prophet David's wrong judgment? Now the question becomes did prophet David use false wisdom/tradition from his past in determining this judgment or did he inadvertently invent a false restriction to not combine the livestock?
Since God Almighty tells us
"..but the people who rejected invented lies to God, and most of them do not comprehend."
This part of the verse tells me prophet David was not the one who invented the lie regarding the restriction of mixing livestock.

The reasoning David used for his judgment was;
And many who mix their properties take advantage of one another, except those who believe and do good works, and these are very few. (3824)

A false restriction here is linked to the prophet David who guessed he was being tested after he made his judgment and fell down kneeling, and repented.

God Almighty knows all.