What you see above is what the prayer hands emoji used to look like. We say used to because with the upcoming iOS 8.3 update, the emoji will look like what you see below.
"The latest version of this emoji on iOS and OS X removed the yellow burst of light that previously showed behind the two hands," reads an Emojipedia entry. The change might be because this emoji actually signifies please and thank you or a high five instead of the prayer hands we always assumed. Nothing makes sense anymore.