Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: The Messenger of Allah (peace and blessings be upon him) and his Companions called the talbiyah for Hajj. Whoever had not brought a sacrificial animal came out of ihram; Talhah and so-and-so had not brought sacrificial animals, so the two of them came out of ihram.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8861