Śrīmad-Bhāgavatam · Text 11.23.22
Who is speaking and story frame
लब्ध्वा जन्मामरप्रार्थ्यं मानुष्यं तद्द्विजाग्र्यताम् ।
तदनादृत्य ये स्वार्थं घ्नन्ति यान्त्यशुभां गतिम् ॥ २२ ॥
labdhvā janmāmara-prārthyaṁ
mānuṣyaṁ tad dvijāgryatām
tad anādṛtya ye svārthaṁ
ghnanti yānty aśubhāṁ gatim
Those who obtain human life, which is prayed for even by the demigods, and in that human birth become situated as first-class brāhmaṇas, are extremely fortunate. If they disregard this important opportunity, they are certainly killing their own self-interest and thus achieve a most unfortunate end.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.