Muwatta Malik, Book 16, Hadith 19 (USC-MSA)

Yahya related to me from Malik from Nafi that Abdullah ibn Umar used not to recite when praying over a dead person.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ لاَ يَقْرَأُ فِي الصَّلاَةِ عَلَى الْجَنَازَةِ ‏.‏

sunnah.com

also referenced under: Book 16, Hadith 541 (In-Book)