The Old Uyghur fragment U 3901 (T.M. 96) kept in the Berlin Turfan collection recently published by Professor Peter Zieme is not from the translation of the Buddhāvataṃsaka-sūtra in eighty volumes, as he argues, but represents part of an invocation of bodhisattvas found in the Da fangguang fo huayan jing haiyin daochang shi zhong xingyuan chang bianli chanyi 大方廣佛華嚴經海印道場十重行願常徧禮懺儀, an important monument of late Tangut Buddhism. It is a new text which is not known yet in the Old Uyghur Buddhist literature. This paper presents an analysis of the text and its new edition.