Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 36

Sanskrit:

स उपस्पृश्य शुच्यम्भो नमस्कृत्य महेश्वरम् ।दिव्यान्यस्‍त्राणि संस्मृत्य सज्यं गाण्डीवमाददे ॥ ३६ ॥

ITRANS:

sa upaspṛśya śucy ambhonamaskṛtya maheśvaramdivyāny astrāṇi saṁsmṛtyasajyaṁ gāṇḍīvam ādade

Translation:

After touching pure water, offering obeisances to Lord Maheśvara and recollecting the mantras for his celestial weapons, Arjuna strung his bow Gāṇḍīva.

Purport:

The ācāryas point out that since the brāhmaṇa had disrespected Lord Kṛṣṇa, Arjuna tactfully offered his obeisances instead to Lord Śiva, who had taught Arjuna how to use the mantras of the Pāśupāta weapon.