Shiva Purana
दिव्यायुधः स्कंदगुरुः परमेष्ठीः परात्परः ॥ अनादिमध्यनिधनो गिरीशो गिरिजाधवः ॥ ९ ॥
He is the divine weapon of Skanda and the spiritual master of the Supreme Lord and the Supreme Being. He is the lord of the mountains who is eternal, middle and immortal.
english translation
divyAyudhaH skaMdaguruH parameSThIH parAtparaH ॥ anAdimadhyanidhano girIzo girijAdhavaH ॥ 9 ॥
hk transliteration by Sanscript