What are the trials of the people of desires?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: Is the one who falls into some of the sins considered among the people of desires, and what is the difference between him and the innovator who follows his desire?

Answer:
No, not everyone who falls into sins is among the people of desires; rather, it is the people of lusts. This is because trials are of two types: trials of lusts, such as zina (unlawful sexual intercourse), theft, drinking intoxicants, and consuming riba (usury or interest); and trials of doubts, may Allah protect us from them. These are more severe, and they are those that occur in matters of 'aqidah (creed). These are the trials of the people of desires. The trials of the people of desires are through doubts, so they are more severe. Yes.