From the NYT:

...Standing in the courtyard of [Najaf's] golden-domed Shrine of Ali on Friday, staring at 2,500 worshipers seated on rugs, the imam, Sadr al-Din al-Kubanchi, hurled words as sharp as scimitars at the army that had invaded this holy city.

But the soldiers he denounced were not Americans but members of [Moktada al-Sadr's] Mahdi Army...

"It's not brave to take refuge in the house or the mosque or the markets and use women and children as human shields," Mr. Kubanchi said of the Mahdi Army. "They are people who are trying to cheat you, and they are people from the regime of Saddam Hussein, former intelligence officers. They want to drag you into battle to be destroyed. If that happens, the soldiers will attack Najaf, and our enemies will happily see our blood flow."

The standoff in Najaf has turned into a showdown between the clerics of the city and Mr. Sadr, as the religious and tribal leaders here try to nudge their unwanted neighbor out of town...

Gingerly, since Mr. Sadr now runs the city, they have handed out flyers and given speeches urging the Mahdi Army to take its fight elsewhere. They have done so while their mosques and homes are surrounded by undisciplined militiamen...