Tarif Abu Tamimah relates: I saw Safwan and Jundub (may Allah be pleased with him) and his companions while he was advising them. They asked him: "Have you heard anything from the Messenger of Allah (peace and blessings be upon him)?" He said: I heard him (peace and blessings be upon him) say: "Whoever publicises his good deeds to show off, Allah will publicise his disgrace on the Day of Resurrection," and I think he also said: "And whoever causes (people) hardship, Allah will cause him hardship on the Day of Resurrection."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1669