Ninsho's cinerary urn has a unique shape like a liquor bottle, and a bronze urn of the same type as that from Kakuan-ji Temple was also excavated from the tomb of Ninsho in Chikurin-ji Temple.
忍性の骨蔵器は瓶子のような独特の形のもので、竹林寺の忍性墓からも、額安寺のものと同形式の銅骨蔵器が出土している。