اَلْعَدَد 19:19

يَنْضِحُ ٱلطَّاهِرُ عَلَى ٱلنَّجِسِ فِي ٱلْيَوْمِ ٱلثَّالِثِ وَٱلْيَوْمِ ٱلسَّابِعِ. وَيُطَهِّرُهُ فِي ٱلْيَوْمِ ٱلسَّابِعِ، فَيَغْسِلُ ثِيَابَهُ وَيَرْحَضُ بِمَاءٍ، فَيَكُونُ طَاهِرًا فِي ٱلْمَسَاءِ.

And the clean person shall sprinkle upon the unclean on the third day, and on the seventh day: and on the seventh day he shall purify himself, and wash his clothes, and bathe himself in water, and shall be clean at even.