Sayyiduna Abu Umamah (may Allah be pleased with him) reports this saying of the Prophet (peace and blessings be upon him): "Whoever bears witness that I am the Messenger of Allah should not attend the prayer while holding back urine or stool, until he has relieved himself." After this the narrator mentioned the complete hadith; the full narration will come in the chapter on seeking permission.
Tabarani recorded it in al-Mu'jam al-Kabir, and Imam Ibn Majah recorded part of it. Its chain contains the narrator al-Safr bin Nusayr and the narrator Abdullah bin Salih; both have been declared trustworthy, but there is weakness in both of them, and the rest of the narrators of this narration have been declared trustworthy. A hadith recorded by Imam Ahmad has already passed in the chapter forbidding the imam to single himself out in supplication.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2490
Hadith Gradingمحدثین:إسنادہ ضعیف۔
Hadith Takhrij«أخرجه سنن ابن ماجه برقم: 617، وأخرجه المعجم الكبير للطبراني برقم: 7505»