Bṛhaspati knew everything that would happen in the future. Seeing Indra’s transgression of etiquette, he completely understood that Indra was puffed up by his material opulence. Although able to curse Indra, he did not do so. Instead, he left the assembly and in silence returned to his home.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ततो निर्गत्य सहसा कविराङ्गिरसः प्रभुः । आययौ स्वगृहं तूष्णीं विद्वान् श्रीमदविक्रियाम्
tato nirgatya sahasā kavirāṅgirasaḥ prabhuḥ | āyayau svagṛhaṃ tūṣṇīṃ vidvān śrīmadavikriyām
SB 6.7.9