Mahā-Moggallāna approaches Sāriputta exchanged friendly greetings and sat down at one side. Sitting thus, he addressed Sāriputta saying that there are four modes of progress: painful and slow, painful but quick, pleasant but slow, pleasant and quick. He then asked Sāriputta what was his mode of progress, and he replies that it was pleasant and quick.¹ A.ii.155.