Then the narrator Thawr b. Yazid transmitted a similar tradition with the following wordings: "It is not permissible for a man who believes in Allah and in the Last Day that he should lead the people in prayer but with their permission; and that he should not supplicate to Allah exclusively for himself leaving all others. If he did so, he violated trust."
Abu Dawud said: This is a tradition reported by the narrators of Syria; no other person has joined them in relating this tradition.
In-book : Book 1, Hadith 91
English translation : Book 1, Hadith 91