Natyashastra
प्रददुर्मत्सुतेभ्यस्तु सर्वोपकरणानि वै । प्रीतस्तु प्रथमं शक्रो दत्तवान्स्वं ध्वजं शुभम् ॥ ५९॥
They gave all the necessary instruments to the sons of Matsya, and pleased, Indra first gave his own auspicious flag.
english translation
pradadurmatsutebhyastu sarvopakaraNAni vai । prItastu prathamaM zakro dattavAnsvaM dhvajaM zubham ॥ 59॥
hk transliteration by Sanscript