Sayyiduna Imran bin Husayn (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) said: "When you see a fornicator, a drinker or a thief, what do you say?" We said: Allah and His Messenger know best. He (peace and blessings be upon him) said: "They are acts of indecency, and there are punishments for them."
Only Umar bin Sa'id al-Dimashqi narrated it, and he is munkar al-hadith (his narrations are rejected); it is only known from the hadith of al-Nu'man bin Murrah as a mursal report.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحدود / 16901