Valmiki Ramayana Sundara Kanda Sarga 54 Shloka 9
Original Shlokaअवप्लुत्य महावेगः प्रहस्तस्य निवेशनम्। अग्निं तत्र स निक्षिप्य श्वसनेन समो बली।।5.54.8।। ततोऽन्यत्पुप्लुवे वेश्म महापार्श्वस्य वीर्यवान्। मुमोच हनुमानग्निं कालानलशिखोपमम्।।5.54.9।।
1 source checked for this shloka
महावेगः of greatspeed, श्वसनेन with the Windgod, समः equal, बली powerful, वीर्यवान् brave,सः he, प्रहस्तस्य Prahasta's, निवेशनम् house, अवप्लुत्य jumped down, तत्र there, अग्निम् fire, निक्षिप्य setting, ततः then, अन्यत् another, महापार्श्वस्य Mahaparsva's, वेश्म house, पुप्लुवे jumped, हनुमान् Hanuman, कालानलशिखोपमम् like the flame of fire at the hour of dissolution, अग्निम् fire, मुमोच set.
Powerful and brave Hanuman who was equal to the Windgod in speed jumped down on the house of Prahasta and set fire to it. From there he jumped on to Mahaparsva's house and set it ablaze. Hanuman appeared like the fireflame at the time of dissolution.