Valmiki Ramayana Sundara Kanda Sarga 48 Shloka 16
Original Shlokaततस्तै स्स्वगणैरिष्टैरिन्द्रजित् प्रतिपूजितः। युद्धोद्धतः कृतोत्साहस्सङ्ग्रामं प्रत्यपद्यत।।5.48.16।।
1 source checked for this shloka
ततः then, यद्धोद्धतः rushed forth for war, इन्द्रजित् Indrajit, इष्टैः by people who loved him, तैः स्वगणैः by his own kith and kin, प्रतिपूजितः was honoured with reverence, कृतोत्साहः became vigorous, सङ्ग्रामम् for war, प्रत्यपद्यत went ahead.
Having been honoured by his own kith and kin who loved him, Indrajit rushed forth for war with martial vigour.