Narrated Aishah, Ummul Muminin: A woman made a sign from behind a curtain to indicate that she had a letter for the Messenger of Allah صلی اللہ علیہ وسلم. The Prophet صلی اللہ علیہ وسلم closed his hand, saying: I do not know this is a man's or a woman's hand. She said: No, a woman. He said: If you were a woman, you would make a difference to your nails, meaning with henna.