Valmiki Ramayana Yuddha Kanda Sarga 59 Shloka 60
Original Shlokaएवमुक्तोमहातेजारावणोराक्षसेश्वरः । आजघानानिलसुतंतलेनोरसिवीर्यवान् ।।6.59.60।।
1 source checked for this shloka
एवम् that manner, उक्तः having spoken, महातेजाः highly energetic, वीर्यवान् valiant, राक्षसेश्वरः Rakshasa Lord, रावणः Ravana, अनिलसुतम् son of wind god, तलेन with hand, उरसि on the chest, आजघान slapped.
Having spoken that way by Hanuman, the Lord of Rakshasas slapped his hand on Hanuman's chest.