Yama said I cannot determine the exact period, ordained by Time, of one's life, and hence, unurged by Time, I cannot allow one to live here. I take note of the acts of virtue (or otherwise) that one does in the world.
यम उवाच नाहं कालस्य विहितं प्राप्नोमीह कथंचन। यो हि धर्मं चरति वै तं तु जानामि केवलम्॥