Abd al-Rahman bin Abi al-Sha'tha' (may Allah have mercy on him) says: I said to Ibrahim al-Nakha'i (may Allah have mercy on him) and Ibrahim al-Taymi (may Allah have mercy on him) that I want to combine Hajj and Umrah. Al-Nakha'i (may Allah have mercy on him) said: But your father did not intend that. Al-Taymi (may Allah have mercy on him), narrating from his father, said that he passed by Sayyiduna Abu Dharr (may Allah be pleased with him) at al-Rabadhah and mentioned this to him, and he said: This was a concession only for us, not for you.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8883