Sayyiduna Abu Hurairah (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "When the Iqamah for prayer is called, there is no prayer except the obligatory prayer."
Hadith Referenceسنن دارمي / من كتاب الصللاة / 1486
Sayyiduna Ibn Buhaina (may Allah be pleased with him) said: The iqamah for prayer had been given when the Messenger of Allah (peace and blessings be upon him) noticed a man who was performing two units of Sunnah prayer. When the Prophet (peace and blessings be upon him) finished the prayer, the people surrounded that man. The Messenger of Allah (peace and blessings be upon him) said: "Are you performing four units of (Fajr) morning prayer?"
Hadith Referenceسنن دارمي / من كتاب الصللاة / 1488
It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When the Iqamah for prayer is called (i.e., the Takbir), then there is no prayer except the obligatory prayer." Imam Darimi (may Allah have mercy on him) said: If one is praying at home and the Iqamah is called in the mosque, then this is relatively easier.
Hadith Referenceسنن دارمي / من كتاب الصللاة / 1489
Hadith Gradingتحقیق (حسین سلیم أسد الدارانی):إسناده صحيح وقد اختلف على عمرو بن دينار في رفعه ووقفه ولكن من رفعه ثقة والرفع زيادة وزيادة الثقة مقبولة، [مكتبه الشامله نمبر: 1491]
Hadith Takhrijاس حدیث کی سند صحیح ہے، اور حوالہ گذر چکا ہے۔