Brihajjataka 9.8

9.8

iti nigaditam iṣṭaṃ na iṣṭam anyad viśeṣād adhika phala vipākaṃ janma bhāt tatra dadyuḥ/
upacaya gṛha mitra sva uccagaiḥ puṣṭam iṣṭaṃ av apacaya gṛha nīca āra atigair na iṣṭa sampat//(mālinī)E9

Thus the auspicious has been declared; anything else is not auspicious. In particular, they bestow the manifestation of increased results [in houses reckoned] from the natal sign.
The auspicious is reinforced when [the planets are] in upacaya houses, friendly signs, or their own exaltations; [whereas] wealth that is not desired [results] when they are in non-upacaya houses, debilitations, or inimical signs.