question #3 Sahih Muslim 1232a, Book 15, Hadith 203 : What can be inferred about the importance of accurate transmission of religious practices from this narration?

I heard Allah’s Apostle (way peace be upon him) pronouncing Talbiya for both Hajj and Umra. Bakr (one of the narrators) said: I narrated it to Ibn ‘Umar, whereupon he said: He (the Holy Prophet) pronounced the Talbiya for Hajj alone. I met Anas and narrated to him the words of Ibn ‘Umar, whereupon he said: You treat us not but only as children. I heard Allah’s Messenger (ﷺ) pronouncing Talbiya both for ‘Umra and Hajj.