וַיִּתֵּ֧ן יְהוָ֛ה דֶּ֖בֶר בְּיִשְׂרָאֵ֑ל וַיִּפֹּל֙ מִיִּשְׂרָאֵ֔ל שִׁבְעִ֥ים אֶ֖לֶף אִֽישׁ׃
So the LORD sent a pestilence upon Israel; and there fell of Israel seventy thousand men.
Read halakhic rulings (Jewish law) on I Chronicles 21:14: and classical halakhic sources.