Targum su Numeri 15:34

This is one of four judgments which were brought before Mosheh the prophet, which he adjudged according to the Word of the Holy. Of these judgments some related to money, and some to life. In the judgments regarding money Mosheh was prompt, but in those affecting life he was deliberate, and in each he said, I have not heard, - to teach the princes of the future Sanhedrin to be prompt in decisions on mammon, and deliberate in those that involved life, nor to be ashamed to inquire for counsel in what may be difficult, forasmuch as Mosheh the Rabbi of Israel himself had need to say, I have not heard. Therefore put they him in confinement, because they had not yet heard the explanation of the judgment they should execute upon him.

This is one of four cases that are written above, on that of the blasphemer, and they who were defiled by the dead. And they put him in ward till the time when it should be plainly showed to them from before the Lord, with what judgment they were to deal with him.