Genesis 16:15

And Hagar gave birth to a child, the son of Abram, to whom Abram gave the name of Ishmael.

Genesis 25:12

Now these are the generations of Ishmael, the son of Abraham, whose mother was Hagar the Egyptian, the servant of Sarah:

Genesis 16:11

And the angel of the Lord said, See, you are with child and will give birth to a son, to whom you will give the name Ishmael, because the ears of the Lord were open to your sorrow.

Genesis 17:18

And Abraham said to God, If only Ishmael's life might be your care!

Genesis 17:20

As for Ishmael, I have given ear to your prayer: truly I have given him my blessing and I will make him fertile and give him great increase; he will be the father of twelve chiefs, and I will make him a great nation.

Genesis 17:25-26

And Ishmael, his son, was thirteen years old when he underwent circumcision.

Genesis 21:9-21

And Sarah saw the son of Hagar the Egyptian playing with Isaac.

Genesis 25:9

And Isaac and Ishmael, his sons, put him to rest in the hollow rock of Machpelah, in the field of Ephron, the son of Zohar the Hittite, near Mamre;

Genesis 28:9

So Esau went to Ishmael and took Mahalath, the daughter of Abraham's son Ishmael, the sister of Nebaioth, to be his wife in addition to the wives he had.

Genesis 37:27

Let us give him to these Ishmaelites for a price, and let us not put violent hands on him, for he is our brother, our flesh. And his brothers gave ear to him.

1 Chronicles 1:28

The sons of Abraham: Isaac and Ishmael.

Galatians 4:22-23

Because it is in the Writings, that Abraham had two sons, one by the servant-woman, and one by the free woman.

Treasury of Scripture Knowledge

Summary

And Hagar bare Abram a son: and Abram called his son's name, which Hagar bare, Ishmael.

General references

Bible References

Hagar

Genesis 16:11
And the angel of the Lord said, See, you are with child and will give birth to a son, to whom you will give the name Ishmael, because the ears of the Lord were open to your sorrow.
Genesis 25:12
Now these are the generations of Ishmael, the son of Abraham, whose mother was Hagar the Egyptian, the servant of Sarah:
1 Chronicles 1:28
The sons of Abraham: Isaac and Ishmael.
Galatians 4:22
Because it is in the Writings, that Abraham had two sons, one by the servant-woman, and one by the free woman.

General references

Genesis 25:12
Now these are the generations of Ishmael, the son of Abraham, whose mother was Hagar the Egyptian, the servant of Sarah:

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain