<p style='text-align: justify;'>This Nepalese paper manuscript, written in Kathmandu by a certain Tailapati in 1834 in the <i>mahāvihāra</i> called Ratnaketu, contains the <i>Yogāmbarasamādhipūjāpaddhati</i>, a tantric ritual manual dedicated to Yogāmbara, an important deity of the Kathmandu Valley. He is a so-called 'lineage-deity' (<i>degu/deguli</i>), the focus of special devotion by several Newar monasteries, including the famous Golden Temple in Patan. Unlike other significant tantric deities, Yogāmbara does not have a central scripture of his own. His cult probably has its ancient origins in Eastern India. </p>