kuryād anaśanādikam

yada-when; akalpah-unable to act; sva-kriyayam-in one's own prescribed duties; vyadhibhih-because of disease; jaraya-or because of old age; athava-either; anviksikyam-in spiritual advancement; va-or; vidyayam-in the advancement of knowledge; kuryat-one must do; anasana-adikam-not take sufficient food.