This was said by Shakra himself about the glory of Kurukshetra. All that Shakra said was again approved and sanctioned by Brahman, Vishnu, and Maheshivara. as
इत्युवाच स्वयं शक्रः सह ब्रह्मादिभिस्तदा। तचानुमोदितं सर्वं ब्रह्मविष्णुमहेश्वरैः॥