Why do Saudis say only one tasleem in funeral prayer while we say two?
We believe that there are things in the prayer which have been transmitted through tawatur and ijma of the generations of the believers. These are the things which form the basic structure of the ritual. The differences occur where there is no such unanimous and agreed upon sunnah taught by the Prophet (sws). People have adopted difference views on the basis of their research and understanding. As for the Shari'ah regarding the ritual of funeral prayer please refer to: Funeral Prayer.