The people of the hereafter are three: The Aabid, the Zaahid and the Siddeeq.
The Aabid worships Allaah whilst being attached to searching for provision. The Zaahid worships Him whilst keeping away from attachment to the worldly things. The Siddeeq worships Him with pleasure and conformity, he takes from the worldly things when he sees it fit to (do so) and abandons it when he sees it fit. [Al-Fawaa-id: page: 175]
Who is an Aabid? [A devout worshipper]
Who is a Zaahid? [He is one who abandons those permissible things he is not in need of, which also are not of any benefit to him in the afterlife. (See Madaarij As-Saalikeen). Sufyaan Ath-thawree said that the Zaahid is not the one who eats stringy food or wears woollen clothes, rather he is one who neither rejoices in some worldly gain nor becomes sad when he fails to get something.]
Who is a Siddeeq: [Shaikh Saaleh al Fawzaan says: The Siddeeq is the one who is (known) for much truthfulness and is extremely truthful. [Al-Haa-iyyah: page:117]