Ajahn Kalyano explains the meaning of the ceremony to offer "Cast-off Forest Cloth" to the Sangha. He points out how bhikkhus practise simplicity and contentment regarding robes and other requisites.
Later (18.40 min) he relates the fascinating story how the late Thai King Bhumiphol Adulyadej first came into contact with the Forest Tradition of Ajahn Mun. Not knowing for sure if there are still any monks living who have realized the Dhamma, the king made a solemn determination: "If a there are still any Arahants, may one come to the palace in the next tree days!" He then arranged to have almsfood ready for offering in front of the palace. And indeed, on the third day Luang Por Fun appeared on almsround at the palace, and received some of the food offered. The king enquired about LP Fun and his reputation, found out about his monastery in a remote part of Thailand, and visited him personally.
Over time, he gained great faith in LP Fun, and subsequently received teachings from him and many of the other outstanding disciples of Ajahn Mun. This was the beginning of the late king's lifelong association with the Forest Tradition, which ultimately made the great Krooba Ajahns widely known in Central Thailand and Bangkok.
More about Ajahn Kalyano & Buddha Bodhivana Monastery: m.facebook.com/BuddhaBodhivanaMonastery/
Photos from the Robe Offering Ceremony at Dhammagiri: dhammagiri.org.au/robe-offering-2017-with-ajahn-kalyano.html