Fountain of blessing is the Lord

Genesis 30:1-43
Bilhah, servant of Rachel, bore Jacob sons,
Dan:  Judged
Naphtali: Wrestling of Gods
Zipah, servant of Leah, born Jacob sons,
Gad:  good fortune
Asher: happy
Leah bore Jacob 5th , 6th sons and a daughter,
Issachar: wages or hire
Zebulen:  honor
Dinah
God remembered Rachel, and God listened to her and opened her womb. She bore a son
Joseph: May he add. May the Lord add to me another son.
Laban said  to Jacob "If I have found favor in your sight, I have learned by divination that the Lord has blessed me because of you."
Jacob thought the sight of the rods during gestation would affect the unborn lambs. In fact he owned his flocks to the overruling of God, and to the practice of selective breeding which the dream revealed.
Jacob finds himself traded between the two. (The law would later rule out taking 'a woman who is your wife's sister to make her a rival wife'(Leviticus 18:18))
Laban knew that Jacob was blessed from the Lord so he may became rich.
How?
Like Abraham be blessing of others is the best blessing from the Lord. God is the fountain of blessing.