• Malání Sutta

On eight stains - 

• non repetition in the case of a mantra,
• late rising,
• sluggishness in beauty,
• carelessness in a guard,
• misconduct in a woman, etc.,
• and ignorance, which is the greatest stain.

A.iv.195; cp. Dhp.vs.241f.; see also Mala Sutta.