अस्मिन् this, मुहूर्ते: very minute, एकः alone, गत्व: going, सागरम् ocean, भीमम् terrific, रसातलम् the underworld, अम्बरंवा: or the upper world, प्रविष्टान् entering, वानरान् the monkey, निवर्तिष्यामि: I will put an end.

At this very minute I will go alone into the terrific ocean, to the underworld or the upper world and on entering put an end to the monkey.