Meaning of the Sanskrit Word: iste

  iṣṭe—was able    SB 10.13.43
  iṣṭe—unto the desired object of life    Madhya 22.150
  iṣṭe—in the desired object, the Supreme Personality of Godhead    Madhya 22.151
  iṣṭe—unto the Supreme    Madhya 22.151

Can't find any compound Sanskrit words containing iste.