The Buddha: “If a man is struck by an arrow and is in excruciating pain, will he not remove the arrow and place medications on the wound? Or will that person first search for the cause of the arrow being shot at him? Will he first seek to know the intention of the person who shot the arrow?”
The inquirer answered, that, the person will first remove the arrow and treat the wound. The Buddha then said:
“Dear friend, you have been struck by the arrow of death, the cycle of death and rebirth (Kala), and therefore you should first rid yourself of the suffering, just as the man struck by an arrow first removed the arrow. Then you may consider questions about who created this world, and why, and by what means.”
This example shows that getting rid of the arrow of suffering is a way to understand nirvana, which is ridding ourselves of the cycle of birth and death. It is not an exaggeration to say that one who conquers death through Sadhana (meditation) attains nirvana.
…It can be seen that the state of liberation that both the Buddha and the sages of the Upanishads referred to as nirvana is the same as the state of liberation that the Indian Sants call mukti. The Buddhist and Vedic texts, as well as the Sant Mat texts, are in complete agreement with respect to these concepts of nirvana and mukti.
— Swami Sant Sevi Ji, in the Buddhism Chapter of, Harmony Of All Religions: http://spiritualawakeningradio.com/Harmony8-ChapterThree.pdf