It is narrated from Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) that once Sayyiduna Umar (may Allah be pleased with him) sought permission from the Prophet (peace and blessings of Allah be upon him) to enter the house. At that time, some women of the Quraysh were sitting with the Prophet (peace be upon him) and talking, and their voices were raised. But when Sayyiduna Umar (may Allah be pleased with him) was granted permission to enter, all of them quickly adjusted their veils. When he entered, the Prophet (peace be upon him) was smiling. Sayyiduna Umar (may Allah be pleased with him) said: O Messenger of Allah! May Allah always keep you smiling and happy; may my parents be sacrificed for you. The Prophet (peace be upon him) said: "I am amazed at these women who were sitting with me just now, but as soon as they heard your voice, they quickly observed hijab." Sayyiduna Umar (may Allah be pleased with him) turned towards them and said: O enemies of your own souls! By Allah! The Prophet (peace be upon him) is more deserving that you fear him. The Prophet (peace be upon him) said: "Umar! Leave them, for by Allah! Whenever Satan sees you walking on a path, he leaves that path and takes another."

The last hadith of Sa'd ibn Abi Waqqas, may Allah be pleased with him.