What are the conditions for a valid prayer?

"The Prophet, peace be upon him, performed wudu once, saying, "This is a wudu through which Allah accepts the prayer. He performed wudu twice, saying, "Whoever performs wudu twice, Allah will give him his reward twice over. And he performed wudu thrice, saying, "This is my wudu and the wudu of the prophets before me, and the wudu of the friend of Allah, Abraham, peace be upon him.""

"Whoever does not remember Allah will not be purified except to the extent the water touches him. Furthermore, he said, "Whoever performs wudu on top of wudu, Allah records ten good deeds for him. And he added, "Wudu after wudu is light upon light. This is all encouragement to renew wudu. The Prophet, peace be upon him, said, "When a Muslim servant performs wudu and rinses his mouth, sins come out from his mouth; when he snuffs his nose, sins come out from his nose; when he washes his face, sins come out from his face until they come out from beneath his eyelids; when he washes his hands, sins come out from his hands until they come out from under his nails;"

"Allah purifies his entire body" was narrated by al-Daraqutni from the hadith of Abu Huraira with a weak chain of transmission. The hadith "Whoever performs wudu on top of wudu, Allah records ten good deeds for him" was reported by Abu Dawood, al-Tirmidhi, and Ibn Majah from the hadith of Ibn Umar with a weak chain. The hadith "Wudu after wudu is light upon light" — I have found no basis for it."

"and the wudu of the friend of Allah, Abraham, peace be upon him." He also said, "Whoever remembers Allah during his wudu, Allah purifies his entire body. Whoever does not remember Allah will not be purified except to the extent the water touches him. Furthermore, he said, "Whoever performs wudu on top of wudu, Allah records ten good deeds for him."

"narration Ibn Abbas said that the Messenger of Allah peace be upon him came out of the toilet and was brought food. When asked if he should perform wudu he responded should I pray and then perform wudu. Chapter what has been narrated about the sayings of the Messenger of Allah peace be upon him before and after eating. It is narrated that Salman said I read in the Torah that the blessing of food is in performing wudu before it and after it. I mentioned this to the Prophet peace be upon him and informed him of what I had read in the Torah. The Messenger of Allah peace be upon him said the blessing of food is in performing wudu before it and after it."

"he ate. Anas reported that the Messenger of Allah peace be upon him liked the remnants of food. Chapter what has been narrated about the description of the wudu of the Messenger of Allah peace be upon him. Ibn Abbas narrated that the Messenger of Allah peace be upon him came out of the restroom and food was brought to him. When asked if they should bring him water for ablution he replied I was only commanded to perform wudu when I stand for prayer. In another narration Ibn Abbas said that the Messenger of Allah peace be upon him came out of the toilet and was brought food. When asked if he should perform"

"It is unreasonable to intend with prayer to perform ablution; rather, one should intend with ablution to pray. How can it be consistent for someone to say while performing wudu, "I perform wudu for my prayer," while in his prayer he says, "I pray because of my wudu"? Instead, if someone wants to preserve their wudu from being nullified during the disliked times, they should intend to make up any prayer that may be due because of some deficiency."

"If a rider is in a place where full bowing and prostrating are possible, they should do so. Facing the Qiblah is not obligatory at the start or during the prayer, as the path's direction indicates the Qiblah. Throughout the prayer, one should either face the Qiblah or follow the path's direction. If the mount is intentionally diverted from the path, the prayer becomes invalid, unless it's towards the Qiblah."

"The blind person must rely on imitation, following someone known for their piety and insight, especially if that person is diligent in matters like determining the qiblah, the direction of prayer. If the qiblah is clear, they can trust the word of any just person who informs them, whether at home or while traveling. The blind and the ignorant should avoid traveling in a caravan where no one can identify the qiblah when needed, just as a layperson should not live in a town without a knowledgeable scholar to teach them the details of the shariah."

"If it is suggested that if the vessel belongs to two people, each could perform wudu with his own vessel since he is certain of its purity and only now doubts it, this is conceivable in jurisprudence. However, my stronger opinion is that the prohibition should apply, treating the two as one. This is because valid wudu doesn’t require ownership; performing wudu with someone else's water is like using one's own."