They also promise not to interfere with government policy in the area and to uphold 'national unity.'
He is freed a month after his sentence ends on his family's assurance they will not publicize the release.
He is hospitalized in critical condition after being assaulted by police while in detention.
Accused of 'illegal activities,' he was given 15 months at hard labor.
The opening of a residence for the abbot, who lives in India, draws hundreds, sources say.
Many had received advanced degrees in India, and returned to Tibetan areas to teach in local monasteries.
Monks and nuns coming from Larung Gar's Serthar county may now also be forced to leave, sources say.
Following his friends' release from prison, he is seized by police after returning to his home.
They had released a CD of songs praising the Dalai Lama and opposing Chinese rule in Tibetan areas.
They go door-to-door checking monks' and nuns' personal information and selecting individuals for removal.
They are told they may be able to continue their studies if they leave on their own
Police monitor proceedings at the once-restive Tibetan monastery but do not interfere, a local source says.