Musannaf Ibn Abi Shaybah

Hazrat Masruq narrates that when Hazrat Ibn Masood would buy a slave, he would supplicate as follows: O Allah! Grant us blessing in this. And make him long-lived and grant him abundant sustenance.

Hazrat Abu Aqil narrates that his teacher said: I asked Hazrat Ibn Sirin, "When I see a flash of lightning, what should I say?" He replied: Close both your eyes and remember Allah.