Sayyiduna al-Miswar bin Makhramah (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "None of you should ever pray while he feels any of the filth (the narrator says: that is, while he needs to relieve himself or urinate)."
Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains al-Waqidi, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2488
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«أخرجه المعجم الأوسط للطبراني برقم: 2845»