Characteristics of Prayer

Bukhari :: Book 1 :: Volume 12 :: Hadith 757

Narrated Zaid binWahb:

Hudhaifa saw a person who was not performing the bowing and prostrations perfectly. He said to him, "You have not prayed and if you should die you would die on a religion other than that of Muhammad."

Source materials are from the University of Southern California MSA site
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