यदृच्छया चोपपन्नं स्वर्गद्वारमपावृतम्। सुखिनः क्षत्रियाः पार्थ लभन्ते युद्धमीदृशम्।।2.32।।
yadṛichchhayā chopapannaṁ swarga-dvāram apāvṛitam sukhinaḥ kṣhatriyāḥ pārtha labhante yuddham īdṛiśham
Happy are the Kshatriyas, O Arjuna! who are called to fight in such a battle that comes of its own accord as an open door to heaven.