Hanad bin al-Sari bin Mus'ab هناد بن السري بن مصعب · The Book on Traveling

"The Messenger of Allah traveled on a journey and he prayed two Rak'ah for nineteen days." Ibn Abbas said: "So when we would stay somewhere for nineteen (days) we would pray two Rak'ah , and if we stayed longer than that we would complete the Salat."

"Ibn Umar had been requested to urgently attend to one of his wives, so he hurried en route and delayed Maghrib until the twilight disappeared, then he dismounted to combine them (the prayers). Then he informed them that the Messenger of Allah would do that when he was in a hurry on a trip."

"That the Prophet ordered." And he mentioned similarly.

"The Messenger of Allah would love to start with the right side when he purified himself, and when he combed, and when putting his sandals on."

the Messenger of Allah said: The acceptable Wudu is with two Ratils of water."

"The Prophet permitted the Junub when he wanted to eat, drink, or sleep, to perform Wudu like the Wudu for Salat."