The fifth volume comprising of 1-49 Sargas of Upaśama Prakarana of the 8th edition of the Yogavāsiṣṭha is a thoroughly revised edition with respect to original Sanskrit Text, English translation and Notes. It also has Roman Transliteration of Sanskrit ślokas. This time a humble attempt is made to make this new edition free from all grammatical and typographical errors that were visible in the editions published by Parimal publications. Since an objective and the updated translation free from flaws is awaited since long and earlier editions could not fill up the gap, this new edition is presented with revised translation, illustrations and notes. Hope the readers and seekers will be benefited alike with the deep philosophical insights of the Yogavāsiṣṭha.