If a woman's voice is not considered 'awrah, and Aisha conversed with the Companions, then why did the Prophet (peace be upon him) forbid women from saying 'Subhanallah' during prayer and instead command them to clap?

Imam Malik is of the view that a woman may say "SubhanAllah" (glorify Allah) just like a man when necessary during prayer. He believes that the hadith "clapping is for women" is meant to be a dispraise, so a woman should not do it in prayer. He supports this with the hadith "Whoever experiences something [untoward] in his prayer, let him say 'SubhanAllah'." Whereas the majority of scholars believe that women should clap and not say "SubhanAllah" in prayer, for fear of fitna (temptation/discord) or that the worshippers might be distracted by the sound of a woman's voice.