Skandapurana 1.4.39.95

1.4.39.95

oṃgaṃ gaṇapataye namaḥ.. oṃkṣāṃ kṣetrapālāya namaḥ.. oṃgaṃ gurubhyo namaḥ.. iti ākāśe.. oṃkauṃ kuladevyai namaḥ.. oṃ naṃdine namaḥ.. oṃmahākālāya namaḥ.. oṃdhātre vidhātrai namaḥ..
tataḥ pravisya liṃgācca kiñciddakṣiṇataḥ śuciḥ..
udaṅmukhaḥ kṣaṇaṃ dhyāyetsamakāyāsanasthitaḥ.. 41.95 ..

“Oṃ Gaṃ, homage to Gaṇapati. Oṃ Kṣāṃ, homage to the Guardian of the Sacred Field. Oṃ Gaṃ, homage to the Gurus.” Thus in the air. “Oṃ Kauṃ, homage to the Goddess of the Family. Oṃ, homage to Nandin. Oṃ, homage to Mahākāla. Oṃ, homage to Dhātṛ and Vidhātṛ.” / Then entering, slightly to the right of the liṅga, pure, / facing north, seated in a steady posture, one should meditate for a moment: 41.95