Bhagavad Gita 1.34
Arjuna lists the relatives he would have to fight: teachers, fathers, sons, grandfathers and in-laws.
आचार्याः पितरः पुत्रास्तथैव च पितामहाः।
मातुलाः श्वशुराः पौत्राः श्यालाः सम्बन्धिनस्तथा॥
ācāryāḥ pitaraḥ putrās tathaiva ca pitāmahāḥ
mātulāḥ śvaśurāḥ pautrāḥ śyālāḥ sambandhinas tathā
Translation
Teachers, fathers, sons, and grandfathers too; maternal uncles, fathers-in-law, grandsons, brothers-in-law, and other relatives.
Hindi
आचार्य, पिता, पुत्र और पितामह भी; मामा, श्वसुर, पौत्र, साले और अन्य संबंधी।
Commentary
A single verse turns the whole battlefield into a family tree. The complete list of relationships is Arjuna's way of saying that no clean line separates friend from foe. The Gita will not dismiss this. It will answer it, beginning in Chapter 2. Meanwhile Arjuna's argument continues in 1.35.
