is it correct according to hazrat Ayesha(R.A)riwayat that women should wear some thing in neck such as necklace or black thread etc?
All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad 
  is His slave and Messenger.
We have not come across any narration with this wording from ‘Aa’ishah 
. However, a similar narration was narrated from her about the dress of the woman during the prayer. Al-Bayhaqi 
  reported in “As-Sunan Al-Kubra” that ‘Aa’ishah 
  disliked for a woman to pray without adornment, even if she wears a string around her neck. 
Besides, Abdur-Razzaaq 
  reported the same thing in his “Al-Musannaf” from Anas 
  that he was asked: “Can a woman pray while wearing no necklace around her neck?” He replied: “A woman should not pray except while wearing a necklace around her neck even if she could not find anything but a cord.” 
Moreover, Abdur-Razzaaqk 
  also reported in his “Al-Musannaf” from Ma’mar from Ayyoob from Ibn Seereen that he disliked that a woman prays without having a necklace around her neck. I said: “Why is this?” He replied: “So that she would not resemble men.” 
Also, a Dha’eef [weak] narration was reported from the Prophet 
  which the author of “Kanz Al-Ummaal” attributed to Ibn An-Najjaar. Moreover, As-Suyooti 
  stated in “Al-Jaami’ Al-Kabeer” that it was reported by Ibn Abi Haatim in “Al-‘Ilal” and he classified it as Dha’eef. Its wording is: “O ‘Ali, order your women not to pray without adornments, and order them to dye their hands with Henna so that they (their hands) would not resemble the hands of men.” 
Allaah Knows best.
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