References – SN 22.49: Soṇa (1) 
Readings by Ajahn Karuṇadhammo:
Sutta: SN 22.89, Khandhasaṁyutta, “Khemaka.”
Sutta: SN 22.49, Khandhasaṁyutta, “Soṇa (1).”
The Fourth Foundation of Mindfulness [2013], Session 33
Comment by Ajahn Cunda: The Buddha’s description of a monk who ‘does not laud himself and disparage others’ (e.g. AN 4.28) sounds similar to SN 22.49. [Conceit] [Humility]
Response by Ajahn Karuṇadhammo.
The Fourth Foundation of Mindfulness [2013], Session 33, Excerpt 5
Readings from The Island by Ajahn Pasanno and Ajahn Amaro, Chapter 5, pp. 87-92. Read by Ajahn Amaro:
Nyaṇatiloka Bhikkhu, Buddhist Dictionary, p. 106.
Suttas: MN 140.31; Dhp 21; AN 6.49; SN 22.49; SN 1.20; Nid 80.226; MN 144.9; SN 22.59 (also at Mahāvagga 1.6).