1 Corinthians 14:34-35

Amplified Bible

³⁴the ^[a]women should be silent in the churches, for they are not authorized to speak, but are to take a subordinate place, as the Law says. ³⁵If there is anything they want to learn [that is, if they have questions about anything being said or taught], they are to ask their own husbands at home; for it is improper for a ^[b]woman to talk in church.

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Footnotes

1 Corinthians 14:34 When used elsewhere in the New Testament, in specific reference to a woman (cf Eph 5:22; Col 3:18; Titus 2:4, 5; 1 Peter 3:1, 5), this word refers to a married woman, so these admonitions (vv 34, 35) may be directed primarily to the wives of believing husbands.
1 Corinthians 14:35 Paul does not comment on unmarried women; they probably have to abide by the prohibition against speaking out in church as well, and ask questions outside the service.