Abu Jamrah al-Duba'i says: I put on the ihram with the intention of performing Hajj Tamattu', but people forbade me. I went to Sayyiduna Ibn Abbas (may Allah be pleased with them both) and asked him about this issue, so he told me to go ahead and do it. Then I set out towards the House of Allah, and when I arrived there, I fell asleep. In my dream, a person came to me and said: "Your 'Umrah has been accepted and your Hajj is also accepted." When I woke up from the dream, I went to Sayyiduna Ibn Abbas (may Allah be pleased with them both) and told him about my dream. Upon this, he said "Allahu Akbar" twice and said: "This is the Sunnah of Abu al-Qasim (peace and blessings be upon him)." And he said: "In Hady, participation is allowed in a camel, cow, goat, or an animal shared by seven people."
Hadith Referenceمسند احمد / ومن مسند بني هاشم / 2158