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How do the 5 Mental Hindrances become 10?


The Blessed Buddha once explained:
How, Bhikkhus, is the explanation of the five mental hindrances becoming ten???                
Own sense-desire for anything internal is a hindrance. Others sense-desire and
any sense-desire for anything external is a hindrance too. Sense-desire is thus
twofold by this explanation: Internal and external.
Own ill-will opposing anything internal is a hindrance. Others ill-will & any aversion
opposing anything external are hindrances too. A dual ill-will can thus be defined.
Any lethargy is a mental hindrance. Any laziness is indeed also a mental hindrance.
Lethargy and laziness therefore, becomes an obstructing double mental hindrance.
All restlessness there is, is a mental hindrance. Whatever regret there is, is also
a hindrance. Therefore can restlessness & regret be explained as two hindrances.

Any doubt and uncertainty about any internal personal condition, is a hindrance.
Any doubt and uncertainty about any other external condition, is also a hindrance.
Thus does doubt and uncertainty become explained, as a matched mirror pair.

More on  these 5 Mental Hindrances (Nīvaranas):
http://What-Buddha-Said.net/drops/II/The_5_Mental_Hindrances.htm
http://What-Buddha-Said.net/drops/II/Feeding_the_Hindrances.htm
http://What-Buddha-Said.net/drops/II/Starving_the_Hindrances.htm
http://What-Buddha-Said.net/drops/II/How_5_Become_10.htm
http://What-Buddha-Said.net/drops/II/The_Canal.htm
http://What-Buddha-Said.net/drops/II/Naturally_Radiant.htm
http://What-Buddha-Said.net/drops/IV/Suitable_Substitution.htm
http://What-Buddha-Said.net/Canon/Sutta/AN/AN.I.3-4.htm
http://What-Buddha-Said.net/Canon/Sutta/AN/AN.I.3-4c.htm
http://What-Buddha-Said.net/drops/II/The_Fire_of_Sense-Desire.htm
http://What-Buddha-Said.net/drops/II/Colourful_but_Muddy.htm
http://What-Buddha-Said.net/drops/II/Anger_and_Irritation.htm
http://What-Buddha-Said.net/drops/II/Lethargy_and_Laziness.htm

http://What-Buddha-Said.net/drops/II/Restlessness_and_Regret.htm
http://What-Buddha-Said.net/drops/II/Doubt_and_Uncertainty.htm

Source (edited extract):
The Grouped Sayings of the Buddha. Samyutta Nikāya.
Book [V
:110] section 46: The Links. 52: The Explanation...