sattvaá¹ jñÄnaá¹ rajaḥ karma
tamo 'jñÄnam ihocyate
guṇa-vyatikaraḥ kÄlaḥ
svabhÄvaḥ sÅ«tram eva ca
sattvam - the mode of goodness; jñÄnam - knowledge; rajaḥ - the mode of passion; karma - fruitive work; tamaḥ - the mode of ignorance; ajñÄnam - foolishness; iha - in this world; ucyate - is called; guṇa - of the modes; vyatikaraḥ - the agitated transformation; kÄlaḥ - time; svabhÄvaḥ - innate tendency, nature; sÅ«tram - the mahat-tattva; eva - indeed; ca - also.
The impetus for the interaction of the material elements is the forward movement of time. Because time is passing, the embryo grows within the womb, gradually comes out, grows up, produces by-products, dwindles and dies. All of this is due to the pushing of time. In the absence of the time factor, the material elements do not interact but remain inert in the form of pradhÄna. Lord Kṛṣṇa is establishing the basic categories of the material world so that human beings can conceive of the Lord’s creation. Were the categories not condensed, analysis and conceptualization would be impossible, since the Lord’s potencies are infinite. Although there are numerous divisions of material elements within the basic divisions, the spirit soul is always to be understood as a distinct transcendental element, meant for residence in the kingdom of God.