Attributed to Hui Neng, it means - paraphrased of course - "Originally there is not one thing." 無一物 is "not one thing," or "having nothing."
It's good not to have things you might get stuck to.
A Blog from a Zen Buddhist with a technical background
According to its website, the group calls on followers to perform a good deed each day and to fast several days a month and then to donate to charity the money they would have spent on food. The website also speaks of the group’s “commitment to the prosperity of the Chinese nation and world peace.”
Mr. Wu, who is also addressed by followers as His Holiness Vairocana Xing Wu, founded Huazang Dharma in the late 1980s and traces its teachings back to the earliest days of Buddhism. A number of followers believe he possesses healing powers and say the traditional Chinese medicine he prescribes can cure cancer and other diseases.
Nicole Ho, who lives in the United States and who credits Mr. Wu with saving the life of her ailing father, has been a devout follower since 1995. “His ability and level of wisdom is simply different from anyone else,” she said. “With Master Wu, you listen and feel good from head to toe.”
Mr. Wu had been briefly detained twice by the police in recent years, but his followers said the current detentions of him and his followers suggested the authorities were determined to crush the group.
According to several witnesses, the police entered Mr. Wu’s home in Zhuhai on July 29 saying they wanted to examine his residency registration papers and then took him away. A number of followers living in apartments in the same complex were also detained at the same time, including children who were studying meditation and martial arts. Meanwhile, the police in the nearby city of Shenzhen raided two businesses affiliated with Huazang Dharma and the homes of people working there.
Mr. Wu Zeheng, with an alias Xin Yu and Buddhist name His Holiness the Vairocana Xing Wu, is the Patriarch of Buddhism, the 88th successor of Buddha, the 61th Successor of Zen Dharma, the 51th Successor of the Caodong Dharma, and the 32nd Successor of the Offspring Sangha Dharma. Holding the Symbol of Buddha Dharma - the”Kashaya and alms bowl ” (the hundreds patched robe and the alms bowl) that is the direct line of descent from Supreme Shakyamuni Buddha.