It is narrated from Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was at al-Hajun, and he (peace and blessings be upon him) was extremely grieved and sorrowful. So he (peace and blessings be upon him) supplicated to Allah: "O Allah, show me a sign today after which I will not care who among my people denies me." Then he (peace and blessings be upon him) called a tree from the direction of the mountain pass of the people of Madinah, and it came, splitting the earth, until it reached him (peace and blessings be upon him) and greeted him (peace and blessings be upon him) with peace. Then he (peace and blessings be upon him) commanded it, and it went back. Sayyiduna Umar (may Allah be pleased with him) said: Then he (peace and blessings be upon him) said: "Now I do not care who among my people denies me."
Hadith Referenceمسند أبي يعلى الموصلي / مسند عمر بن الخطاب رضي الله عنه / 215
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«حکم الحدیث مسند ابی یعلی محققاً تنسیق حسين سليم أسد - مکتبہ شاملہ :قال حسين سليم أسد: إسناده ضعيف . » «قال سعيد بن محمد السناري: منكر» «أخرجه مجمع الزوائد ومنبع الفوائد برقم: 14171، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 6477/3، مسند ابویعلیٰ ترقیم الاثری: 210»