It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "I was admitted into Paradise and I heard a faint sound. I asked: Who is this? It was said: Bilal."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7778