6.6.2 Commitments Pride
Don't look to profit from sorrow.
All Buddhist practice, and mind training in particular, is about ending suffering. Anticipation of gain from others' suffering, or even complacency about it, breaches the intention of this practice.
Related instructions
2.2.1
Train in taking and sending alternately
2.2.3
Use reminders in everything you do
4.1.1
The five forces while living
6.2.2
Don't talk about others' shortcomings
6.2.3
Don't dwell on others' problems
6.3.2
Give up any hope for results
7.2.3
Keep these two
7.4.1
Train without preference
7.5.2
Don't get things wrong