References – SN 46.55: Saṅgarava 
Water similes for the mind with and without hindrances. (SN 46.55) Teaching by Ajahn Pasanno. [Hindrances] [Similes] // [Sensual desire] [Ill-will] [Sloth and torpor] [Restlessness and worry] [Mindfulness of breathing] [Doubt] [Mindfulness of body]
Sutta: DN 2.98: “These are shoals of fish …”
Ānāpānasati: Mindfulness of In-and-Out Breathing [2005], Session 8, Excerpt 2
“Could you talk more about working with the hindrance of doubt?” Answered by Ajahn Pasanno. [Doubt ] // [Fear] [Aversion] [Sensual desire] [Mindfulness of body] [Tranquility] [Mindfulness of feeling] [Right Speech] [Delusion]
Simile: A dish of muddy water placed in a dark cupboard (SN 46.55). [Similes]
Metta Retreat [2008], Session 2, Excerpt 9
Reading: SN 46.55, Bojjhaṅgasaṁyutta, “Saṅgārava.” Read by Ajahn Pasanno. [Similes] [Hindrances] [Factors of Awakening]
The Fourth Foundation of Mindfulness [2013], Session 13, Excerpt 5
“In the Five Hindrances, does ill-will apply only to people?” Answered by Ajahn Pasanno. [Hindrances] [Aversion] [Ill-will] // [Similes]
The Fourth Foundation of Mindfulness [2013], Session 18, Excerpt 6