Valmiki Ramayana 6.41.22

इत्येवं संवदन् वीरो लक्ष्मणं लक्ष्मणाग्रजः ।तस्मादवातरच्छीव्रं पर्वताग्रान्महाबलः॥

ityevaṃ saṃvadan vīro lakṣmaṇaṃ lakṣmaṇāgrajaḥ |tasmādavātaracchīvraṃ parvatāgrānmahābalaḥ ||

Our plain-language meaning of this verse is waiting for scholar review.