Shiva Purana

siva.sh/siva-purana/saturda-samhita/19/53

तदैव मुनिना तेन सौमित्रिः प्रेषितो हठात् ।। तन्तत्याज द्रुतं रामो बन्धुं पणवशान्मुने ।। ५३ ।।

sanskrit

At the very same time Lakṣmaṇa was obstinately sent in by Durvāsas. O sage, Rāma immediately forsook his brother in accordance with the earlier agreement.

english translation

tadaiva muninA tena saumitriH preSito haThAt || tantatyAja drutaM rAmo bandhuM paNavazAnmune || 53 ||

hk transliteration by Sanscript