Sayyiduna Abdullah bin Mughaffal (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "The fornicator is not a believer while he commits fornication; the thief is not a believer while he steals; the drinker of wine is not a believer while he drinks it; and the one who plunders something that people are looking at is not a believer while he plunders it."
Tabarani recorded it in al-Mu'jam al-Kabir; its chain contains a narrator, Qays bin al-Rabi', whom Shu'bah and others declared thiqah (trustworthy), while Ahmad and Yahya bin Ma'in declared him da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الإيمان / 368