Ibn Abi al-Shuwarab محمد بن عبد الملك بن أبي الشوارب · The Book on Traveling

"The sun was eclipsed during the time of the Messenger of Allah, so the Messenger of Allah led the people in prayer. He recited a lengthy recitation, then he bowed a lengthy bowing, then he raised his head and recited a lengthy recitation that was less than the first. Then he bowed a lengthy bowing that was less than the first. Then he raised his head and prostrated. Then he did (similar to) that in the second Rak'ah."

"The Prophet prayed Salat Al-Khawf, praying one Rak'ah with one of the two groups, while the other group was facing the enemy. (When the first group finished they first Rak'ah with him), they went and took position (of the second group, facing the enemy). Then the second group came and he led them in another Rak'ah, then he said the Taslim to them, while the group proceeded to complete their (second) Rak'ah. Thereafter, the first group stood up to finish…