The Story of Thera Tissa the Idle One

While residing at the Jetavana monastery, the Buddha uttered Verse (280) of this book, with reference to Tissa, a lazy bhikkhu.
Once, five hundred young men were admitted into the Order by the Buddha in Savatthi. After receiving a subject of meditation from the Buddha, all the new bhikkhus except one went to the forest to practise meditation. They practised zealously and vigilantly so that in due course all of them attained arahatship. When they returned to the monastery to pay homage to him, the Buddha was very pleased and satisfied with their achievement. Bhikkhu Tissa who stayed behind did not try hard and therefore achieved nothing.
When Tissa found that the relationship between the Buddha and those bhikkhus was very cordial and intimate, he felt rather neglected, and regretted that he had wasted all that time. So he resolved to practise meditation throughout the night. As he was walking in meditation on that night, he slipped and broke a thigh bone. Other bhikkhus hearing his cry went to help him. On hearing about the above incident the Buddha said, "Bhikkhus, one who does not strive when he should be striving but idle away his time will not attain mental absorption (jhana) and Magga Insight."
Then the Buddha spoke in verse as follows: