Mara

When the Venerable Ánanda left Him, Mara approached the Buddha and invited Him to pass away.

The Buddha replied:

"O Evil One! Make thyself happy, the death of the Tathágata shall take place before long. At the end of three months from this time the Tathágata will pass away."

Immediately after, the Buddha consciously and deliberately rejected the rest of His allotted term of life. Later the Buddha mentioned this matter to the Venerable Ánanda, who then reminded Him of His previous utterance and besought Him to remain for a Kappa.

"Enough, Ánanda, beseech not the Tathágata! The time for making such a request is past. If thou shouldst then have so besought the Tathágata, the Tathágata might have rejected the appeal even for the second time, but the third time he would have granted it. Thine, therefore, Ánanda, is the fault, thine is the offence." replied the Buddha.