Musannaf Ibn Abi Shayba 33:369

Muhammad ibn Bishr narrated to us, he said: A sheikh from among us, who is called al-Hakam ibn al-Fudayl, narrated to us, from Zayd ibn Aslam, who said: Abu al-Darda’ said: Seek goodness throughout your entire time, and expose yourselves to the breaths of Allah’s mercy, for indeed Allah has breaths of His mercy with which He strikes whom He wills of His servants. And ask Allah to conceal your private parts and to secure your fears.