Although Indra searched vigorously with the assistance of the other demigods, he could not find Bṛhaspati. Then Indra thought, “Alas, my spiritual master has become dissatisfied with me, and now I have no means of achieving good fortune.” Although Indra was surrounded by demigods, he could not find peace of mind.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
गुरोर्नाधिगतः संज्ञां परीक्षन् भगवान् स्वराट् । ध्यायन् धिया सुरैर्युक्तः शर्म नालभतात्मनः
gurornādhigataḥ saṃjñāṃ parīkṣan bhagavān svarāṭ | dhyāyan dhiyā surairyuktaḥ śarma nālabhatātmanaḥ
SB 6.7.17