Shuddhiddipika 16.69

Śuddhiddīpikā 16.69

nakṣatraśudhyā vāsagṛhasthānanirṇayaḥ
kṛttikādyāstu pūrvādā saptasaptoditāḥ kramāt
yadiśyaṃ yasya nakṣatraṃ tasya tatra gṛhaṃ śubham