1 Korintus 11:6

11:6 For if a woman will not cover her head, she should cut off her hair. But if it is disgraceful for a woman to have her hair cut off or her head shaved, she should cover her head.

1 Korintus 9:17

9:17 For if I do this voluntarily, I have a reward. But if I do it unwillingly, I am entrusted with a responsibility.