The next morning, when I arrived at the Musjid for the Fajr Salaah, I found Imaam Abu Hanifah (rahimahullah) standing, holding onto his beard saying, “O the One who rewards even an atom of good with good, and recompenses even an atom of evil with evil, save Nu’maan, your slave, from the fire and all the evil which is close to it, and enter Nu’maan into the vastness of Your mercy.” (Nu’maan was the name of Imaam Abu Hanifah).

After witnessing this scene, I proceeded to call out the Azaan. After calling out the azaan, I saw that Imaam Abu Hanifah (rahimahullah) was still standing and that the lamp was still burning (i.e. Imaam Abu Hanifah (rahimahullah) had added oil to the lamp and kept it burning the entire night). I thereafter entered the Musjid. When I entered, Imaam Abu Hanifah (rahimahullah) asked me, “Have you come to take the lamp?” I replied, “I have already called out the Fajr Azaan.” (hence I do not need to take the lamp to call out the azaan). Imaam Abu Hanifah (rahimahullah) then said to me, “Do not reveal what you have seen.” (i.e. my remaining in ‘ibaadah in the Musjid the entire night and the du‘aa which you heard from me). He then performed two rakaats of Salaah after which he remained seated until we were commencing the Fajr Salaah. He then stood and with his wudhu of the previous night, performed the Fajr Salaah with us.

(Wafayaatul A’yaan 5/412)