Muhammad bin Ishaq said: Abdullah bin Amir set out from Naysabur for Umrah, having entered ihram there, and appointed al-Ahnaf bin Qays as his deputy over Khurasan. When he had completed his Umrah, he came to Uthman bin Affan (may Allah be pleased with him), and that was in the year in which Uthman (may Allah be pleased with him) was killed. Uthman (may Allah be pleased with him) said to him: When you entered ihram from Naysabur, you deceived yourself with your Umrah right then.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8934