Thereafter, Bhṛgu, the chief of the great sages, invited Lord Śiva to come to the sacrificial arena. Thus the demigods, accompanied by the sages, Lord Śiva, and Lord Brahmā, all went to the place where the great sacrifice was being performed.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ततो मीढ्वांसमामन्त्र्य शुनासीराः सहर्षिभिः । भूयस्तद्देवयजनं समीढ्वद्वेधसो ययुः
tato mīḍhvāṃsamāmantrya śunāsīrāḥ saharṣibhiḥ | bhūyastaddevayajanaṃ samīḍhvadvedhaso yayuḥ
SB 4.7.7