Bhagavad Gita 1.34 Chapter 1, Verse 34

आचार्याः पितरः पुत्रास्तथैव च पितामहाः ।
मातुलाः श्वशुराः पौत्राः श्यालाः सम्बन्धिनस्तथा ॥१.३४॥

ācāryāḥ pitaraḥ putrāstathaiva ca pitāmahāḥ
mātulāḥ śvaśurāḥ pautrāḥ śyālāḥ sambandhinastathā

Meaning

teachers, fathers, sons and grandfathers, maternal uncles, fathers-in-law, grandsons, brothers-in-law and other relatives.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 1.34 (Chapter 1, Arjuna's Despair (Arjuna Vishada Yoga), Verse 34)