Mahabharata 3.128.15

नरके वा धर्मराज कर्मणास्य समो ह्यहम्पुण्यापुण्यफलं देव सममस्त्वावयोरिदम्

narake vā dharmarāja karmaṇāsya samo hyahampuṇyāpuṇyaphalaṃ deva samamastvāvayoridam

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