Sunan Abi Dawud
Sunan Abi Dawud 1180
There was an eclipse of the sun during the lifetime of the Messenger of Allah (ﷺ), so the Messenger of Allah (ﷺ) went out to the mosque and stood, then said the takbir and the people formed rows behind him. The Messenger of Allah (ﷺ) recited for a long time, then said the takbir and bowed for a long time. Then he raised his head and said: "Sami' Allahu liman hamidah, Rabbana wa lakal-hamd." Then he stood up and recited for a long time, which was shorter than the first recitation. Then he said the takbir and bowed for a long time, which was shorter than the first bowing. Then he said: "Sami' Allahu liman hamidah, Rabbana wa lakal-hamd." Then he did likewise in the other rak'ah, completing four rak'ahs and four prostrations, and the sun cleared before he left.