Deuteronomy 25:5

If brethren shall dwell together, and one of them shall die and have no child, the wife of the dead shall not marry without to a stranger: her husband's brother shall go in to her, and take her to him for a wife, and perform the duty of a husband's brother to her.

Matthew 22:24

Saying, Master, Moses said, If a man shall die, having no children, his brother shall marry his wife, and raise up seed to his brother.

Mark 12:19

Master, Moses wrote to us, If a man's brother shall die, and leave his wife, and leave no children, that his brother should take his wife, and raise seed to his brother.

Luke 20:28

Saying, Master, Moses wrote to us, If any man's brother should die, having a wife, and he should die without children, that his brother should take his wife, and raise up seed to his brother.

Genesis 38:8-9

And Judah said to Onan, Go in to thy brother's wife, and marry her, and raise up seed to thy brother.

Ruth 1:12-13

Turn again, my daughters, go your way; for I am too old to have a husband. If I should say, I have hope, if I should have a husband also to-night, and should also bear sons;

Ruth 3:9

And he said, Who art thou? And she answered, I am Ruth thy handmaid: spread therefore thy skirt over thy handmaid; for thou art a near kinsman.

Ruth 4:5

Then said Boaz, What day thou buyest the field of the hand of Naomi, thou must buy it also of Ruth the Moabitess, the wife of the dead, to raise up the name of the dead upon his inheritance.

Treasury of Scripture Knowledge

Summary

If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband's brother shall go in unto her, and take her to him to wife, and perform the duty of an husband's brother unto her.

Bible References

Brethren

Matthew 22:24
Saying, Master, Moses said, If a man shall die, having no children, his brother shall marry his wife, and raise up seed to his brother.
Mark 12:19
Master, Moses wrote to us, If a man's brother shall die, and leave his wife, and leave no children, that his brother should take his wife, and raise seed to his brother.
Luke 20:28
Saying, Master, Moses wrote to us, If any man's brother should die, having a wife, and he should die without children, that his brother should take his wife, and raise up seed to his brother.

Husband's brother

Genesis 38:8
And Judah said to Onan, Go in to thy brother's wife, and marry her, and raise up seed to thy brother.
Ruth 1:12
Turn again, my daughters, go your way; for I am too old to have a husband. If I should say, I have hope, if I should have a husband also to-night, and should also bear sons;
Ruth 3:9
And he said, Who art thou? And she answered, I am Ruth thy handmaid: spread therefore thy skirt over thy handmaid; for thou art a near kinsman.
Ruth 4:5
Then said Boaz, What day thou buyest the field of the hand of Naomi, thou must buy it also of Ruth the Moabitess, the wife of the dead, to raise up the name of the dead upon his inheritance.

General references

Genesis 38:8
And Judah said to Onan, Go in to thy brother's wife, and marry her, and raise up seed to thy brother.
Leviticus 18:16
Thou shalt not uncover the nakedness of thy brother's wife: it is thy brother's nakedness.
Matthew 14:4
For John had said to him, It is not lawful for thee to have her.
Luke 20:28
Saying, Master, Moses wrote to us, If any man's brother should die, having a wife, and he should die without children, that his brother should take his wife, and raise up seed to his brother.