Hadith 3 umdatul ahkam:
-Narrated ‘Abdullaah bin ‘Amr ibnu-l’Aas and Abu Hurayrah and ‘Aa’ishah (May Allaah be pleased with them), who said that Allaah’s Apostle (sallallaahu ‘alayhi wa sallam) said, “Woe to dry heels because of Hellfire.” [Sahih Muslim, Book 002, Number 0473]

⁃ An individual must cover all of the limbs when performing wudhu
⁃ ‘Woe’ - a wording of warning
⁃ ‘The heels’ - by missing the heels during wudhu could be a reason for you to enter the hell fire due to the fact that you have not completed the wudhu
⁃ ‘From the fire’ - the hellfire in the akhirah
⁃ The purification is one of the most important pillar of salah so leaving off something from it means your salah has not been corrected
⁃ Washing is the feet is obligatory and only the Shia opposite it
⁃ Each of the limbs have to be washed comprehensively
⁃ The recompense is from the same form of action in itself
⁃ Neglecting the heels during wudhu can lead to your legs being dipped into the hellfire
⁃ Conserve the water that you use during wudhu
⁃ Using so much water can lead to you being complacent but not reaching all the limbs

Hadith 4:

⁃ On the authority of Abu Hurayrah (May Allaah be pleased with him), that Allaah’s Apostle (sallallaahu ‘alayhi wa sallam) said,
“If anyone of you performs ablution he should put water in his nose and then blow it out and whoever cleans his private parts with stones should do so with odd numbers. And whoever wakes up from his sleep should wash his hands three times before putting them in the water for ablution, because nobody knows where his hands were during sleep.”
And in a narration by Muslim:
“Let him take water into his nose, washing the nose by putting water in it”.
And in another narration: And he who makes ablution, then let him take water into his nose.”
[Sahih al-Bukhari, Volume 1, Book 4, Number 163

⁃ These affairs mentioned in the hadith are all commands due to the wording used by the narrator
⁃ The command of using an odd amount E.g. tawaf, throwing of the stone, wudhu etc