Rigveda 3.39.6

इन्द्रो॒ मधु॒ सम्भृ॑तमु॒स्रिया॑यां प॒द्वद् वि॑वेद श॒फव॒न्नमे॒ गोः ।गुहा॑ हि॒तं गुह्यं॑ गू॒ळहम॒प्सु हस्ते॑ दधे॒ दक्षि॑णे॒ दक्षि॑णावान्॥

indro madhu sambhṛtamusriyāyāṃ padvad viveda śaphavanname goḥ |guhā hitaṃ guhyaṃ gūḷahamapsu haste dadhe dakṣiṇe dakṣiṇāvān ||

Our plain-language meaning of this verse is waiting for scholar review.