William Muir

“ When the fatal event took place, Usama broke up the camp, and carrying back the banner received at the hands of Mohammad, planted it in the court of the great Mosque, close by the door of 'Aisha's apartment.
Abu Bekr deaf to reclamations against its despatch.
The day following his inauguration, Abu Bekr took up the banner, and restoring it to Usama, in token that he was still commander, bade the army again assemble and encamp at the Jurf as it had done before; not a man was to be left behind. ”

“ The camp, including all available fighting men, had been formed at the Jurf, a little way outside Medina on the Syrian road. During the Prophet's sickness the force remained inactive there, uncertain of the issue. ”