Mahabharata 15.29.1

वैशंपायन उवाच · vaiśaṃpāyana uvāca

एवं ते पुरुषव्याघ्राः पाण्डवा मातृनन्दनाःस्मरन्तो मातरं वीरा बभूवुर्भृशदुःखिताः

evaṃ te puruṣavyāghrāḥ pāṇḍavā mātṛnandanāḥsmaranto mātaraṃ vīrā babhūvurbhṛśaduḥkhitāḥ

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