Someone said to Abdullah bin Abbas, "Abu Abbas, what do you make of your statement that no pilgrim who did not bring along a sacrificial animal can perform the tawaf around the Kabah without exiting his pilgrim state through an Amra, and that no pilgrim who did bring along his sacrificial animal can perform the tawaf without combining an Amra and a Hajj? People do not say this."He replied, "Woe to you. The Messenger of Allah ﷺ set out, and those of his companions with him spoke of nothing but Hajj. Then the Messenger of Allah ﷺ commanded those who had not brought a sacrificial animal with them to perform the tawaf around the Kabah and exit their pilgrim state through an Amra. One of the men would say, 'Messenger of Allah, but it is Hajj!' And the Messenger of Allah ﷺ would reply, 'It is not Hajj, it is an Amra.'"
عن عبد الله بن عباس، قال: قلت له: يا أبا العباس، أرأيت قولك: ما حج رجل لم يسق الهدي مه، ثم طاف بالبيت إلا حل بعمرة، وما طاف بها حاج قد ساق معه الهدي إلا اجتمعت له عمرة وحجة، والناس لا يقولون هذا؟ فقال: ويحك، إن رسول الله ﷺ خرج ومن معه من أصحابه لا يذكرون إلا الحج، فأمر رسول الله ﷺ من لم يكن معه الهدي أن يطوف بالبيت، ويحل بعمرة، فجعل الرجل منهم يقول: يا رسول الله، إنما هو الحج؟ فيقول رسول الله ﷺ: إنه ليس بالحج، ولكنها عمرة.
Ahmad (2360) narrated it from Yaqub, who said, my father narrated to me, from Ibn Ishaq, who said, Muhammad bin Muslim Zuhri narrated to me, from Kurayb, who related it. Its chain is hasan because Muhammad bin Ishaq stated his source explicitly, and it has come in Sahih Bukhari in abbreviated form.As for what is narrated from Ibn Abbas, from the Prophet ﷺ, that he said, "If a man enters ihram for Hajj, then arrives at Makkah and performs tawaf around the House and between Safa and Marwa, he has completed ihlal, and it becomes an umrah," this is daif. Abu Dawud (1791) narrated it from Ubaydullah bin Muaz, who said, my father narrated to me, who said, Nahhas narrated to us, from Ata, from Ibn Abbas, who related it.This Nahhas, with the ha doubled, is Ibn Khattab Qaysi Basri, who is daif by the unanimous agreement of the scholars. Abu Dawud faulted it for contradicting Ibn Jurayj, who narrated it from Ata, from the companions of the Prophet ﷺ, as a mursal report, saying, the companions of the Prophet entered ihram exclusively for Hajj, then the Prophet ﷺ made it into an umrah.