Lama Umapa

This morning I woke up and remembered the name "UMAPA" very clearly in my dream. Only the name is clear, but I have forgotten the rest of the dream. But I remember it is something about seeking the teachings of Umapa. I have not been reading about Lama Umapa lately, so I am not sure why I dreamt of his text or his name now. For your info, Lama Umapa was Lama Tsongkhapa's teacher (as well as student) who was the intermediary between Manjusri and Tsongkhapa. They communicated through Lama Umapa. But later, Tsongkhapa was able to directly communicate with Manjusri, without Lama Umapa. They did many retreats together. Anyone has any sadhana or verses /practices written by/attributed to Lama Umapa?
from Berzin Archive:
Tsongkhapa also went to study the practice of Manjushri Dharmachakra (‘Jam-dbyangs chos-kyi ‘khor-lo) and Madhyamaka with the Karma Kagyu Lama Umapa (Bla-ma dbu-ma-pa dPa’-bo rdo-rje). This great master had studied Madhyamaka with the Sakya tradition and, since childhood, had daily visions of Manjushri, who taught him one verse each day. Tsongkhapa and he became mutual teacher and disciple. Lama Umapa checked with Tsongkhapa to get confirmation that the teachings he received in his visions of Manjushri were correct. This is very important, since visions can be influenced by demons.
Together with Lama Umapa, Tsongkhapa did an extensive retreat on Manjushri. From this time onward, Tsongkhapa received direct instruction from Manjushri in pure visions and was able to receive from him answers to all his questions. Before this, he had to ask his questions to Manjushri through Lama Umapa.