Meaning of the Sanskrit Word: nihsreyasaya

  niḥśreyasāya—for the ultimate benefit    SB 3.25.13, Madhya 8.40
  niḥśreyasāya—for the ultimate good    SB 1.3.40
  niḥśreyasāya—a great personality has no reason to go to the gṛhastha but to benefit him    SB 10.8.4

Can't find any compound Sanskrit words containing nihsreyasaya.