اَلْعَدَد 19:12

يَتَطَهَّرُ بِهِ فِي ٱلْيَوْمِ ٱلثَّالِثِ، وَفِي ٱلْيَوْمِ ٱلسَّابِعِ يَكُونُ طَاهِرًا. وَإِنْ لَمْ يَتَطَهَّرْ فِي ٱلْيَوْمِ ٱلثَّالِثِ فَفِي ٱلْيَوْمِ ٱلسَّابِعِ لَا يَكُونُ طَاهِرًا.

He shall purify himself with it on the third day, and on the seventh day he shall be clean: but if he purify not himself the third day, then the seventh day he shall not be clean.