The Book of the Sunnah
0/11.2. Chapter:
The Virtue of 'Umar (ra)
Sunan Ibn Majah
حَدَّثَنَا إِسْمَاعِيلُ بْنُ مُحَمَّدٍ الطَّلْحِيُّ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ خِرَاشٍ الْحَوْشَبِيُّ، عَنِ الْعَوَّامِ بْنِ حَوْشَبٍ، عَنْ مُجَاهِدٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ لَمَّا أَسْلَمَ عُمَرُ نَزَلَ جِبْرِيلُ فَقَالَ يَا مُحَمَّدُ لَقَدِ اسْتَبْشَرَ أَهْلُ السَّمَاءِ بِإِسْلاَمِ عُمَرَ .
It was narrated that Ibn 'Abbas said: "When 'Umar became Muslim, Jibril came down and said: 'O Muhammed! The people of heaven are rejoicing because of 'Umar's Islam.'"
Reference : Sunan Ibn Majah 103In-book reference : Introduction, Hadith 0English translation : Vol. 1, Book 1, Hadith 103