One's own deeds are like the soil, and Destiny is compared to the seed. The harvest grows from the union of the soil and seed.
क्षेत्रं पुरुषकारस्तु दैवं बीजमुदाहृतम्। क्षेत्रबीजसमायोगात् ततः सस्यं समृद्ध्यते॥