וַיַּנִּ֥יחוּ אֹת֖וֹ בַּמִּשְׁמָ֑ר כִּ֚י לֹ֣א פֹרַ֔שׁ מַה־יֵּעָשֶׂ֖ה לֽוֹ׃ (ס)
And they put him in ward, because it had not been declared what should be done to him.
Read kabbalistic (mystical) interpretation of Numbers 15:34: and classical mystical sources.