Valmiki Ramayana Sundara Kanda Sarga 57 Shloka 28
Original Shlokaतमभ्रघनसङ्काशमापतन्तं महाकपिम्।।5.57.28।। दृष्ट्वा ते वानरास्सर्वे तस्थुः प्राञ्जलयस्तदा।
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तदा then, अभ्रघनसङ्काशम् resembling heavy cloud, आपतन्तम् approaching, तं महाकपिम् that great vanara, दृष्ट्वा having seen, ते those, वानराः vanaras, प्राञ्जलयः with folded hands, तस्थुः stood.
(On seeing) Hanuman, who was resembling a heavy cloud approaching, the vanaras stood with folded hands.