Verse 13

मनःकल्पनया ह्येते सुसंबद्धाः परस्परम् ।रूपालोकमनस्कारा दारुणी जतुना यथा

In plain words

By the mind's own fabrication, indeed, these — form, light, the mental act — are bound fast to one another, as two pieces of wood are joined by resin.