Shiva Purana
ईशाभ्यां नम इत्युक्त्वापार्श्वयोश्च त्रिपुण्ड्रकम् ११५ब्। बीजाभ्यां नम इत्युक्त्वा धारयेत्तु प्रकोष्ठयोः ११५ ।
He shall have Tripuṇḍra in the sides saying Īśābhyāṃ Namaḥ (obeisance to Śiva and the goddess) and in the forearms by saying Bījābhyām Namaḥ (obeisance to the generating seeds).
english translation
IzAbhyAM nama ityuktvApArzvayozca tripuNDrakam 115b। bIjAbhyAM nama ityuktvA dhArayettu prakoSThayoH 115 ।
hk transliteration by Sanscript