Valmiki Ramayana Ayodhya Kanda Sarga 59 Shloka 24

सूत O charioteer, वा otherwise, इदम् this, महत् great, व्यसनम् calamity, भवितव्यतया because it was destined to happen this way, अस्य this, कुलस्य race's, विनाशाय for destruction, यदृच्छया wilfully, प्राप्तम् has befallen, नूनम् surely.

Surely it is destiny and this calamity has befallen for the wilful destruction of the (entire) race, O charioteer