It is narrated from Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) that he said: "Indeed, Allah, the Blessed and Exalted, and His angels send down their mercies and blessings upon the person who establishes the first row and keeps it straight."
[Musnad al-Harith (Zawa'id al-Haythami): 410. This narration states the extraordinary virtue of the first row; the salah from Allah means the sending down of mercy, while the salah from the angels means supplication for forgiveness and the raising of ranks. This meaning is also supported by other sahih marfu' narrations.]
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب الصلاة / 396
Hadith Gradingمحدثین:إسناده ضعيف، مرسل
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :مرسل، إسناده ضعيف. » «أورده ابن حجر فى "المطالب العالية"، 396، وأخرجه عبد الرزاق فى «مصنفه» برقم: 2433، 2434»