Being a good man is a Buddha and becoming immortal without asking me is a five-character couplet written by Tang Tuo, a famous calligrapher in Shanghai during the Republic of China.
If you are kind, everyone will become a Buddha. If you don't want me, you will become an immortal. The meaning of these two sentences is that your kindness depends on who is the Buddha, and you don't want anything, so I am the immortal.