וָאֶכְתֹּ֤ב בַּסֵּ֙פֶר֙ וָֽאֶחְתֹּ֔ם וָאָעֵ֖ד עֵדִ֑ים וָאֶשְׁקֹ֥ל הַכֶּ֖סֶף בְּמֹאזְנָֽיִם׃
And I subscribed the deed, and sealed it, and called witnesses, and weighed him the money in the balances.
Read Jewish philosophical commentary on Jeremiah 32:10: and classical philosophical sources.