“Until you fall asleep you should rely on mindfulness to pursue the predominant virtuous action that you have cultivated during the day. Thereby you will be able to sustain your spiritual practice, such as meditative stabilization, even while asleep, similar to when you are not asleep.”
From Middle Length Lam-Rim with Trijang Rinpoche’s Additional Outlines by Lama Tsongkhapa (and Trijang Rinpoche). Translated by Philip Quarcoo. Unpublished DRAFT translation (May 2012) by FPMT, Inc. Download the PDF here.