bhagavata-arambhe—in the beginning of Srimad-Bhagavatam; vyasa—the great author Vyasadeva; mangala-acarane—in the auspicious invocation; parama-isvara—the Supreme Personality of Godhead; nirupila—has described; ei dui laksane—by these two characteristics, namely svarupa (personal) and tatastha (marginal) symptoms.