591 إِنْ كان عِنْدَكَ مَاءٌ بَاتَ هذه الليلةَ في شَنَّةٍ وإِلَّا كَرَعْنَا
If you have any water that has remained this night in a skin (we would like it), otherwise we would drink directly (from a water source)

عن جابر بن عبد الله رضي الله عنهما أَنَّ رسولَ اللهِ صلى الله عليه وسلم دَخَلَ على رجلٍ مِنَ الأَنْصَارِ، ومعه صاحبٌ له، فقال رسولُ اللهِ صلى الله عليه وسلم : «إِنْ كان عِنْدَكَ مَاءٌ بَاتَ هذه الليلةَ في شَنَّةٍ وإِلَّا كَرَعْنَا».

Jābir ibn ‘Abdullāh (may Allah be pleased with him) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) entered upon a man of the Ansār, accompanied by one of his Companions. The Messenger of Allah (may Allah's peace and blessings be upon him) said: "If you have any water that has remained this night in a skin (we would like it), otherwise we would drink directly (from a water source)."

صحيح - ( رواه البخاري ). Sahih/Authentic. [Al-Bukhari]

قال جابر رضي الله عنهما : دخل رسول الله صلى الله عليه وسلم على رجل من الأنصار، يقال: إنه أبو الهيثم بن التيهان الأنصاري رضي الله عنه ، ومعه صاحب له وهو أبو بكر رضي الله عنه ، فسأله النبي صلى الله عليه وسلم إن كان عنده ماء بائت في قربة، وكان الوقت صائفا، والحكمة من ذلك أن الماء البائت يكون باردا، وإلا تناولنا الماء بالفم من غير إناء ولا كف.
Jābir (may Allah be pleased with him) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) entered the house of a man of the Ansār. It is said that he was Abu al-Haytham ibn At-Tayyihān al-Ansāri. The Prophet was accompanied by his Companion Abu Bakr. The Prophet (may Allah's peace and blessings be upon him) asked the Ansāri man if he had any water that had remained overnight in a water skin, and this was in summer. The wisdom behind that is that the water which remains overnight is cool. If he did not have such water, they would drink water directly with their mouths from a water source, without using a cup or their hand.

جواز شرب الماء من منبعه مباشرة. لا بأس بشرب الماء البارد في اليوم الحار. دوام مصاحبة أصحاب رسول الله -صلى الله عليه وسلم- وعدم مفارقته. يجوز للرجل أن يطلب السقيا من غيره من زائد حاجته بلا إلحاق ضرر له.