देवैरत्रापि विचिकित्सितं पुरा न हि सुविज्ञेयमणुरेष धर्मः । अन्यं वरं नचिकेतो वृणीष्व मा मोपरोत्सीरति मा सृजैनम् ॥

Yama said: On this subject even the gods formerly had their doubts. It is not easy to understand: the nature of Atman is subtle. Choose another boon, O Nachiketa! Do not press me. Release me from that boon