It is narrated from Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said (to me): "Go out and announce among the people that whoever bears witness that there is no god worthy of worship except Allah, Paradise has become obligatory for him." Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) relates: I went out and met Sayyiduna Umar bin al-Khattab (may Allah be pleased with him). He asked: O Abu Bakr, what is the matter? I replied that the Messenger of Allah (peace and blessings be upon him) has said to me: "Go out and proclaim among the people that whoever bears witness that there is no god but Allah, Paradise has become obligatory for him." Sayyiduna Umar (may Allah be pleased with him) said: Go back to the Messenger of Allah (peace and blessings be upon him), for I fear that people will rely on this alone (and abandon deeds). So I went back to the Messenger of Allah (peace and blessings be upon him), and he (peace and blessings be upon him) asked: "What brought you back?" I informed him (peace and blessings be upon him) of what Sayyiduna Umar (may Allah be pleased with him) had said, and he (peace and blessings be upon him) said: "He has spoken the truth."
Hadith Referenceمسند أبي يعلى الموصلي / مسند أبي بكر الصديق رضي الله عنه / 105
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: صحيح لغيره» «أخرجه اللالكائى في كتاب "الذكر" كما في كنز العمال [رقم/ 1407]. قال الهيثمى في "المجمع" [1/ 158]: "رواه أبو يعلى وفى إسناده: سويد بن عبد العزيز، مسند ابویعلیٰ ترقیم الاثری: 100»