I heard the Prophet ﷺ say, "Allah and His angels send blessings upon the first row," or "the first rows."
حدثنا زيد بن الحباب حدثني حسين بن واقد حدثني سماك بن حرب
سمعت النبي ﷺ يقول إن الله عز وجل وملائكته يصلون على الصف الأول أو الصفوف الأول
Its isnad is sahih. Husayn bin Waqid Marwazi, the judge, is trustworthy despite having some lapses. The hadith was narrated by Abu Dawud 1/178, no. 664, in the Book of Prayer, chapter on the merit of one who connects the rows, and Nasai 2/13, no. 646, and Ibn Majah 1/319, no. 999, and Darimi 1/353, no. 1264, and Ibn Hibban 113, no. 386, Mawarid.