The Prophet ﷺ used to preach and teach his companions the rules of Islam so he rebuked those not completing ablution. In this hadith, Abdullah ibn Amr narrated that while returning from Mecca to Medina with the Prophet ﷺ, they came to some water and some of them wanted to get Asr prayer before its time ended, as the narration of Bukhari showed. As a result, they hurriedly performed ablution. The Prophet's habit was to walk behind people to urge those being late, accompany the weak, and then lead them all in prayer. In this case, the above-mentioned people wanted to delay the prayer till its last time, hoping to pray with him. When he reached them, he noticed their dry heels that were not touched by the water of ablution. As a result, he rebuked them saying, "Woe to heels because of Hell," for they did not complete their ablution. Then, he commanded them to thoroughly complete their ablution. This hadith contains the following benefits: (1) It urges us to completely perform ablution and thoroughly wash all its members, (2) It warns against leaving to wash the back of the foot, and (3) It confirms that the unwashed members will be a reason for punishment..