Theragatha 1.96

Do not underestimate your good kamma

"I offered a single flower,
And then amused myself in heavens
For 800 million years;
With what’s left over I’ve realized nibbāna." 

“Ekapupphaṃ cajitvāna,

asīti vassakoṭiyo;
Saggesu paricāretvā,
sesakenamhi nibbuto”ti.

~ Khaṇḍasumano thero