Valmiki Ramayana Yuddha Kanda Sarga 22 Shloka 5
Original Shlokaब्राह्मेणास्त्रेणसंयोज्यब्रह्मदण्डनिभम् शरम् । संयोज्यधनुषिश्रेष्ठविचकर्षमहाबलः ।।6.22.5।।
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महाबलः strong, ब्रह्मदण्डनिभम् resembling the rod of punishment of the creator, Brahma, शरम् arrow, ब्राह्मेणअस्त्रेण energized by Brahma, संयोज्य stretched, श्रेष्ठे best one, धनुषि by the bow, संयोज्य stretched, विचकर्ष released.
Rama proceeded to stretch the mighty bow that resembled the rod of punishment of Brahma energized by Brahma and released that best of bows.