Ezekiel 44:20

They shall not shave their heads, nor nourish the bush of their hair, but round their heads only.

Numbers 6:5

And as long as the vow of his abstinence endureth, there shall no razor nor shears come upon his head, until his days be out which he fasteth unto the LORD, and he shall be holy and shall let the locks of his hair grow.

Leviticus 21:5-24

They shall make them no baldness upon their heads or shave off the locks of their beards, nor make any marks in their flesh.

Deuteronomy 14:1

Ye are the children of the LORD your God; cut not yourselves nor make you any baldness between the eyes for any man's death.

1 Corinthians 11:14

Or else doth not nature teach you, that it is a shame for a man, if he have long hair:

Treasury of Scripture Knowledge

Summary

Neither shall they shave their heads, nor suffer their locks to grow long; they shall only poll their heads.

General references

Bible References

Shave

Leviticus 21:5
They shall make them no baldness upon their heads or shave off the locks of their beards, nor make any marks in their flesh.
Deuteronomy 14:1
Ye are the children of the LORD your God; cut not yourselves nor make you any baldness between the eyes for any man's death.

Nor suffer

Numbers 6:5
And as long as the vow of his abstinence endureth, there shall no razor nor shears come upon his head, until his days be out which he fasteth unto the LORD, and he shall be holy and shall let the locks of his hair grow.
1 Corinthians 11:14
Or else doth not nature teach you, that it is a shame for a man, if he have long hair:

General references

Leviticus 19:27
Ye shall not round the locks of your heads, neither shalt thou mar the tufts of thy beard.