Śrīmad-Bhāgavatam · Text 1.17.13
Who is speaking and story frame
आख्याहि वृष भद्रं व: साधूनामकृतागसाम् ।
आत्मवैरूप्यकर्तारं पार्थानां कीर्तिदूषणम् ॥ १३ ॥
ākhyāhi vṛṣa bhadraṁ vaḥ
sādhūnām akṛtāgasām
ātma-vairūpya-kartāraṁ
pārthānāṁ kīrti-dūṣaṇam
O bull, you are offenseless and thoroughly honest; therefore I wish all good to you. Please tell me of the perpetrator of these mutilations, which blacken the reputation of the sons of Pṛthā.
Read Śrīla Prabhupāda's purport on Vedabase.io