Ibraaheem Ibn Maysarah (rahimahullaah) said:

Taawoos (rahimahullaah) said to me: You either get married or else I will say to you what Umar Ibnul Khattaab (radiyallaahu-anhu) said to Abee Zawaa-id: Nothing prevents you from marriage except impotency or evil deeds. [Hilyatul Awliyaa: 4/6]

Ibn Taawoos narrated from his father (Taawoos) who said:

Miserliness is that a person is miserly with what he has in his hand; and greediness is that a man loves to have what people have in their hands through unlawful means. He is not contented. [Hilyatul Awliyaa: 4/6]