Sayyiduna Ibn Umar (may Allah be pleased with them both) narrates concerning the saying of Allah, the Mighty and Majestic: "The Hajj is (in) well-known months" that the Messenger of Allah (peace and blessings be upon him) said: "They are Dhu al-Qa'dah and Dhu al-Hijjah."
And concerning "So whoever makes Hajj obligatory upon himself in them", Sayyiduna Ibn Umar (may Allah be pleased with them both) said: "What is meant by it is the talbiyah and the ihram (calling out the talbiyah and entering the state of ihram). So 'no rafath' means having intercourse with women, 'no fusuq' means abuse and insults, and 'no jidal' means arguing, disputing and quarrelling."
No one narrated this hadith from Ibrahim bin Muhajir as a marfu' report (attributed to the Prophet) except Sharik (may Allah have mercy on him).
Hadith Referenceالمعجم الأوسط / باب الميم / 7060
Hadith Takhrij«أخرجه الحاكم فى «المستدرك» برقم: 3110، 3112، وسعيد بن منصور فى «سننه» برقم: 329، 331، 344، والبيهقي فى «السنن الكبرى» برقم: 8802، 9261، والدارقطني فى «سننه» برقم: 2455، 2456، وابن أبي شيبة فى «مصنفه» برقم: 13404، 13804، 13805، 13815»