181 – ‘Abd Allah narrated to us. He said: Muhammad ibn al-Husayn reported: Badal ibn al-Muhabbar al-Yarbu‘i related to me, saying, “I heard al-Khalil ibn Ahmad say: It was asked of one of the kings, ‘Over which of the things that have passed do you feel the deepest regret?’ He replied, ‘Over striving to please someone who shows no gratitude.’”