Take physical action or speak out against injustice when needed .

This hadith encourages us to take action against anything we find wrong or abominable in our surroundings. It teaches us that we must use whatever means available to us in order to make a difference. If we have the physical strength, then we can use our hands; if not, then our tongues can be used for speaking out against injustice; and even if this is not possible due to any reason whatsoever, at least one must abhor such things from their hearts. This is the least amount of faith one can have according to this hadith. It also implies that having faith requires taking action when needed instead of just believing without doing anything about it.