यदृच्छया चोपपन्नं स्वर्गद्वारमपावृतम्।
सुखिनः क्षत्रियाः पार्थ लभन्ते युद्धमीदृशम्।।2.32।।
।।2.32।। और हे पार्थ अपने आप प्राप्त हुए और स्वर्ग के लिए खुले हुए द्वाररूप इस प्रकार के युद्ध को भाग्यवान क्षत्रिय लोग ही पाते हैं।।
The impending war is happening by itself, on its own, without any solicitation on the part of Arjuna. Thus when it happens he and his brothers will be fighting on the side of righteousness which constitutes the means for acquiring heavenly happiness without obstacles. Such a war can only be fought by the most fortunate of ksatriyas and Arjuna should understand his good fortune.