"Jihad is of various kinds, with one’s self, one's wealth, by making du’aa’, by teaching and guiding, by helping to do good in any way. The greatest form of jihad is jihad with one’s self (i.e., going oneself and fighting), followed by jihad with one's wealth, jihad by speaking out and guiding others. Da’wah is also part of jihad. But going out oneself to fight in jihad is the highest form."
January 1, 1970
https://en.wikiquote.org/wiki/Jihad