Can you give reference of hadith and the claim that it is weak ? I am not saying that you are wrong , but I need reference to check it up.
http//www.islamicity.com/forum/printer_friendly_posts.asp?TID=13792
The hadeeth mentioned in the question was narrated by Abu Dawood (4104) from al-Waleed from Sa?eed ibn Basheer from Qataadah from Khaalid ibn Durayk from ?Aa?ishah (may Allaah be pleased with her), that Asma? bint Abi Bakr entered upon the Messenger of Allaah (peace and blessings of Allaah be upon him) wearing a thin dress. The Messenger of Allaah (peace and blessings of Allaah be upon him) turned away from her and said, ?O Asma?, when a woman reaches the age of puberty, nothing should be seen of her except this and this? ? and he pointed to his face and hands.
Abu Dawood said This is mursal; Khaalid ibn Durayk did not meet ?Aa?ishah (may Allaah be pleased with her).
This hadeeth is da?eef (weak) and is not fit to be used as evidence. The reasons why it is da?eef are as follows
1 ? Its isnaad is interrupted, as was stated by Imam Abu Dawood (may Allaah have mercy on him) when he said, ?This is mursal; Khaalid ibn Durayk did not meet ?Aa?ishah.?
2 ? Its isnaad includes Sa?eed ibn Basheer al-Azdi (or it was said al-Basri) Abu ?Abd al-Rahmaan. Some scholars of hadeeth regarded him as thiqah (trustworthy), but Ahmad, Ibn Ma?een, Ibn al-Madeeni, al-Nasaa?i, al-Haakim and Abu Dawood regarded him as da?eef. (weak).
Muhammad ibn ?Abd-Allaah ibn Numayr said of him His hadeeth is to be rejected and he does not amount to anything, and he is not strong in hadeeth. He narrated munkar reports from Qataadah.
Ibn Hibbaan said of him He has a bad memory and makes grievous mistakes.
Al-Haafiz ibn Hajar said of him (he is) da?eef.
3 ? Its isnaad includes Qataadah who is mudallis (i.e., gives false impressions concerning the narration of the hadeeth) and did not clearly state that he heard the hadeeth from another. It also includes al-Waleed ibn Muslim of whom al-Haafiz said (he is) trustworthy but he was also mudallis and did not clearly state that he heard the hadeeth from another.
Reference with actual text (translation in Indonesian, sorry, because it is my native language)
http//125.164.221.44/hadisonline/hadis9/kitab_open.php?imam=abudaud&nohdt=3580