Bhagavad Gita 1.20
Arjuna, whose banner bears Hanuman, raises his bow as the fighting is about to begin.
अथ व्यवस्थितान् दृष्ट्वा धार्तराष्ट्रान्कपिध्वजः।
प्रवृत्ते शस्त्रसंपाते धनुरुद्यम्य पाण्डवः॥
atha vyavasthitān dṛṣṭvā dhārtarāṣṭrān kapi-dhvajaḥ
pravṛtte śastra-sampāte dhanur udyamya pāṇḍavaḥ
Translation
Then, seeing Dhritarashtra's sons arrayed and the clash of weapons about to begin, the Pandava whose banner bears the monkey raised his bow.
Hindi
तब धृतराष्ट्र के पुत्रों को व्यूह में खड़े देखकर, और शस्त्रों की टक्कर आरंभ होने को थी तभी, कपिध्वज पाण्डव अर्जुन ने अपना धनुष उठाया।
Commentary
The monkey on Arjuna's banner is Hanuman, who promised to protect the chariot. Arjuna lifts the bow, the moment of action, and yet what follows in 1.21 is a request to pause. The whole Gita grows from that pause.
