Valmiki Ramayana Kishkindha Kanda Sarga 56 Shloka 7
Original Shlokaपश्य सीतापदेशेन साक्षाद्वैवस्वतो यमः। इमं देशमनुप्राप्तो वानराणां विपत्तये।।4.56.7।।
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सीतापदेशेन in the name of Sita, वैवस्वतः Vaivasvata, यमः Yama, साक्षात् himself in person, वानराणाम् to monkeys, विपत्तये to kill, इमं देशम् this place, अनुप्राप्तः has come, पश्य see.
'See, Yama, son of Vaivasvata, has arrived here in person to destroy the monkeys in the name of Sita. (Sita became the direct agent for causing the destruction of monkeys).