This narration is from Muwatta Malik
We can clearly see that Umar bin Khattab made addtion in Adhan. Our Sunni fellows consider it as part of Adhan and make Adhan daily according to Umar bin Khattab,s changings. Wahabi fellows fight with the whole world and say everything Bida’a (innovation). Making addition in Adhan is not Bida’a? then what else is Bida’a?