Mahabharata 14.35.17

ऋषिमाङ्गिरसं वृद्धं पुरस्कृत्य तु ते द्विजाःददृशुर्ब्रह्मभवने ब्रह्माणं वीतकल्मषम्

ṛṣimāṅgirasaṃ vṛddhaṃ puraskṛtya tu te dvijāḥdadṛśurbrahmabhavane brahmāṇaṃ vītakalmaṣam

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