Valmiki Ramayana Kishkindha Kanda Sarga 43 Shloka 1

वानरर्षभः bull among monkeys, सुग्रीवः Sugriva, श्वशुरम् to fatherinlaw, पश्चिमां दिशम् western side, सन्दिश्य having assigned, ततः then, नाम called, वीरम् troop leader, वानरम् of monkeys, शतवलिं Satavali.

Sugriva, the bull among monkeys, having sent his fatherinlaw in the western direction, said to Satavali, troop leader of the monkeys: Sugriva sends the next contingent in the northern direction towards the Himalayas -- countries and places in the north described.