1. Vitthata Sutta. A detailed account of the four kinds of progress: painful progress with sluggish intuition, the painful mode with swift intuition, the pleasant mode with sluggish intuition, the pleasant mode with swift intuition. A.ii.149f.
2. Vitthata Sutta. A detailed description of the powers of a learner: the power of faith, of conscientiousness, of fear of blame, of energy, of iinsight. A.iii.2f
3. Vitthata Sutta. The same as Sutta (2); the powers being of faith, energy, mindfulness, concentration, insight. A.iii.10f.
4. Vitthata Sutta. A detailed description of the advantages of observing the uposatha vows. A.iv.251.