Re: Conversion back to Hinduism
The last line in these two Ahadith is what is of importance here.
http://www.usc.edu/dept/MSA/fundamentals/hadithsunnah/bukhari/052.sbt.html#004.052.283
http://www.usc.edu/dept/MSA/fundamentals/hadithsunnah/bukhari/083.sbt.html#009.083.050