Intro
Nowadays, Ahmadis have been posting this hadith all over social media.  They are trying to argue that anyone can be a Muslim and etc.

The Hadith

Narrated Maimun bin Siyah that he asked Anas bin Malik, “O Abu Hamza! What makes the life and property of a person sacred?” He replied, “Whoever says, ‘None has the right to be worshipped but Allah’, faces our Qibla during the prayers, prays like us and eats our slaughtered animal, then he is a Muslim, and has got the same rights and obligations as other Muslims have.”
Reference : Sahih al-Bukhari 393
In-book reference : Book 8, Hadith 45

http://sunnah.com/bukhari/8/45

Implications
The Prophet said, “….prays like us…”.  What does this mean?  Does this mean praying 5 times per day?  If Ahmadis agree then Aga Khani Shias are not Muslim per the Ahmadiyya implication.  Also, the Nation of Islam doesn’t fall into this category either.

Ahmadis need to explain
Ahmadis need to go back to the drawing board and re-think another argument, this one has crashed.