Abu Wa'il (may Allah have mercy on him) said: Masruq (may Allah have mercy on him) and I often used to go to al-Subayy bin Ma'bad (may Allah have mercy on him) to ask him about this matter. He was a Christian who had become Muslim. He called the talbiyah for Hajj and Umrah, and Salman bin Rabi'ah and Zayd bin Suhan (may Allah be pleased with them both) heard him calling the talbiyah for Hajj and Umrah at al-Qadisiyyah, and they said: "This man is more astray than his family's camel." He said: Those words of theirs fell upon me like a mountain, until I came to Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) and told him about it. He turned to them and rebuked them, then turned to me and said: "You have been guided to the Sunnah of the Prophet (peace and blessings be upon him)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8853