Numbers 6:9

And if any one should die suddenly by him, immediately the head of his vow shall be defiled; and he shall shave his head in whatever day he shall be purified: on the seventh day he shall be shaved.

And if any man die very suddenly by him, and he hath defiled the head of his consecration; then he shall shave his head in the day of his cleansing, on the seventh day shall he shave it.

“‘If any man dies very suddenly beside him, and he defiles the head of his separation, then he shall shave his head in the day of his cleansing. On the seventh day he shall shave it.