Genesis 30:19

30:19 Leah became pregnant again and gave Jacob a son for the sixth time. ¹ 

Genesis 38:4

38:4 She became pregnant again and had another son, whom she named Onan.

[30:19]  ¹ tn Heb “and she bore a sixth son for Jacob,” i.e., this was the sixth son that Leah had given Jacob.