3 67 Chapter : The Dags po 'i bka ' 'bum preliminary practices must be performed prior to any of the later practices, such as Inner Heat, Illusory B ody, etc Segment DK.A.Ba.2: The segment begins (DK.A.Ba.2 4a2 ) : //bla ma dam pa rnams la phyag 'tshal lo! lbskyed pa 'i rim pa 'i man ngag nil It ends (DK.A.Ba.2.5b ) : /n 'a ro ma tri 'i gdams pa 'o/! 904 The second segment presents an instruction on the Generation Stage (bskyed rim, *utpattikrama) This is explained by means of three trainings : ( ) training in th e image (rnam pa la bslab pa), (2) training in the sequence (go rim la bslab pa) , and ( ) train ing i n the sessions (thun mtshams l a bslab pa) For training in the image, i e , how to visualize the deity, the segment instructs the meditator to erect a meditation hut with windows in different directions By the use of a mirror and a sword, the practitioner is at different times of the day able to direct reflected sunlight onto a painting (thang sku) of the deity This allows him to focus on visualizing the deity's face, shape, and hand-implements in a manner that makes the image resplendent with light The meditator is told gradually to extend the length of each session, as a result of which the best meditators will be able to visualize the deity more clearly than the painting, a mediocre practitioner will be able to visualize it as clearly as the painting, while lesser practitioners will only be able to imagine it less clearly than the painting Practitioners who remain unable to achieve a clear visualization are directed to engage in various purificatory practices and then to try again This process should gradually be applied to visualizing the entire Hevajra mm:i