to part with

• 忍痛割爱

  swallow the pain of parting with something

• 这是她心爱之物，只是为了友谊才割爱给了你。

  This is one of her most treasured things, but she has parted with it and given it to you for friendship's sake.

• 这本书他舍不得割爱。

  He cannot bear to part with this book.

• 我主张删掉这段文章，但他舍不得割爱。

  I suggested deleting this section, but he could not bear to see it go.