It is narrated from Sayyiduna Sulayman (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Of all people, the farthest from the reality and true spirit of Islam are those among the Romans who are absorbed in worship (based on monasticism and innovations)."
Imam al-Harith bin Abi Usamah narrated this hadith in his Musnad, but there is a break (inqita') in its chain, because of which this narration falls, by the standards of the science, into the category of da'if (weak).
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب المناقب / 4155
Hadith Gradingمحدثین:إسناده ضعيف، مرسل
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :مرسل، إسناده ضعيف. » «انفرد به المصنف من هذا الطريق»