Authentic Supplication Number 157.

Talha bin `Abdullah bin `Awf said: I offered the funeral prayer behind ‘Ibn `Abbas , and he recited ‘Al-Fatihah and said, “Such that you may know that it is a sunnah.”

Reporters.
Reported in Saheeh Al-Bukhari #419 in the book of funerals in Volume 2 of Muhammad Muhsin Khan’s translation.