Musannaf Ibn Abi Shayba 21:201

Waki’ narrated to us, from Malik ibn Mighwal, who said: I sought Al-Hakam for a need, but I did not find him. Then I sought him and found him. Al-Hakam said: Khaythama said: "If one of you seeks a need and finds it, let him ask Allah for Paradise, for perhaps it is his day in which he will be answered."